CURTA Logo

CURTA DISASSEMBLY

Last Update: July 26, 2010 -- THE CURTA REFERENCE


tn_Img_2981-3095.jpg
Start by removing the two screws on the bottom of the Curta
74.34 KB 
800 x 600 
1/26/2003
Start by removing the two screws on the bottom of the Curta
tn_Img_2981-3096.jpg
The plate will then lift out of the bottom.  Be careful because the side can easily slide off.
75.83 KB 
800 x 600 
1/26/2003
The plate will then lift out of the bottom. Be careful because the side can easily slide off.
tn_Img_2981-3097.jpg
Here you can see the home position mechanism and the anti-reverse cam.  Many of the Curtas also have their serial number on the bottom plate too.
76.95 KB 
800 x 600 
1/26/2003
Here you can see the home position mechanism and the anti-reverse cam. Many of the Curtas also have their serial number on the bottom plate too.
tn_Img_2981-3098.jpg
Now holding the top slide the side off the bottom.
86.63 KB 
800 x 600 
1/26/2003
Now holding the top slide the side off the bottom.
tn_Img_2981-3099.jpg
Now the lower mechanism of the Curta can be observed.
81.13 KB 
800 x 600 
1/26/2003
Now the lower mechanism of the Curta can be observed.
tn_Img_2981-3100-3120.jpg

67.74 KB 
800 x 600 
1/27/2003

tn_Img_2981-3100-3121.jpg
A view from the other side.
77.03 KB 
800 x 600 
1/27/2003
A view from the other side.
tn_Img_2981-3101.jpg
Once the pin is out the crank pulls off.  Pull it up and turn backwards.  It exposes the shaft and two circ lip.  Remove only the lower, larger one.
77.58 KB 
800 x 600 
1/26/2003
Once the pin is out the crank pulls off. Pull it up and turn backwards. It exposes the shaft and two circ lip. Remove only the lower, larger one.
tn_Img_2981-3101-3110.jpg
The crank knob and be removed from the crank by removing the screw.
43.62 KB 
800 x 600 
1/26/2003
The crank knob and be removed from the crank by removing the screw.
tn_Img_2981-3102.jpg
Be careful, I almost got shot in the eye the first time I removed the top.  Cover the top with your hand.  The brass ring secures the carriage pressure spring under it.
80.95 KB 
800 x 600 
1/26/2003
Be careful, I almost got shot in the eye the first time I removed the top. Cover the top with your hand. The brass ring secures the carriage pressure spring under it.
tn_Img_2981-3103.jpg
Here's the Carriage pressure spring.  There's a brass washer under the spring.
76.09 KB 
800 x 600 
1/26/2003
Here's the Carriage pressure spring. There's a brass washer under the spring.
tn_Img_2981-3104.jpg
Here are all of the top inner parts.
58.97 KB 
800 x 600 
1/26/2003
Here are all of the top inner parts.
tn_Img_2981-3105.jpg
Lift the top off.  Remove the ball rearing that's in the side on the lower part of the central shaft.  This ball is used to prevent the top from being lifted after the crank has started turning.  Now you can see the transmission shafts and the ten carry levers.  Now remove the three screws holding the upper side on.
77.38 KB 
800 x 600 
1/26/2003
Lift the top off. Remove the ball rearing that's in the side on the lower part of the central shaft. This ball is used to prevent the top from being lifted after the crank has started turning. Now you can see the transmission shafts and the ten carry levers. Now remove the three screws holding the upper side on.
tn_Img_2981-3106.jpg
Now you can see the entire ten carry mechanism.  Be careful not to catch and bend the tiny ten carry springs.   The tens carry springs are so small you cannot see them in this photo.
101.00 KB 
800 x 600 
1/26/2003
Now you can see the entire ten carry mechanism. Be careful not to catch and bend the tiny ten carry springs. The tens carry springs are so small you cannot see them in this photo.
tn_Img_2981-3107.jpg

82.88 KB 
800 x 600 
1/26/2003

tn_Img_2981-3108.jpg

80.64 KB 
800 x 600 
1/26/2003

tn_Img_2981-3109.jpg

96.47 KB 
800 x 600 
1/26/2003

tn_Img_2981a.jpg

78.78 KB 
800 x 600 
1/26/2003

tn_Img_2982.jpg
Now we're going to remove the setting shafts.  Start by partially loosening the two screws on the left plate.
79.13 KB 
800 x 600 
1/26/2003
Now we're going to remove the setting shafts. Start by partially loosening the two screws on the left plate.
tn_Img_2983.jpg
Slide the setting shaft plate off.  Leave the screws in place.
83.62 KB 
800 x 600 
1/26/2003
Slide the setting shaft plate off. Leave the screws in place.
tn_Img_2983a-3047.jpg
Here's the setting shaft plate.
59.28 KB 
800 x 600 
1/26/2003
Here's the setting shaft plate.
tn_Img_2984.jpg
Now gently push up on the left most setting shaft.  The setting shaft bearing will protrude out the bottom.  Grab it with a pair of tweezers.  Now remove the remaining three bearings.
76.90 KB 
800 x 600 
1/26/2003
Now gently push up on the left most setting shaft. The setting shaft bearing will protrude out the bottom. Grab it with a pair of tweezers. Now remove the remaining three bearings.
tn_Img_2985.jpg
Now the setting shafts can be easily removed.
80.85 KB 
800 x 600 
1/26/2003
Now the setting shafts can be easily removed.
tn_Img_2986-3035.jpg
Here are some views of the setting shaft and it's bearing.  DO NOT SLIDE the setting shaft lever off of the shaft.  It contains a tiny spring and a ball bearing.  I'm guessing that it would be hard as hell to get it back together.
35.28 KB 
800 x 600 
1/26/2003
Here are some views of the setting shaft and it's bearing. DO NOT SLIDE the setting shaft lever off of the shaft. It contains a tiny spring and a ball bearing. I'm guessing that it would be hard as hell to get it back together.
tn_Img_2986-3036.jpg
While I'm at it, DO NOT remove the decimal markers on the top and bottom of the Curta.  They, too, contain a tiny spring and ball bearing. It must have taken me 30 minutes to wrangle the parts back into place after I removed a decimal marker!
While I'm at it, DO NOT remove the decimal markers on the top and bottom of the Curta. They, too, contain a tiny spring and ball bearing. It must have taken me 30 minutes to wrangle the parts back into place after I removed a decimal marker!"
tn_Img_2986-3037.jpg

38.92 KB 
800 x 600 
1/26/2003

tn_Img_2986-3038.jpg
The screw in the knob follows the spiral groove in the setting shaft. The tip of the screw is precisely oriented to fit the angular groove...don't turn the screw!
46.52 KB 
800 x 600 
1/26/2003
The screw in the knob follows the spiral groove in the setting shaft. The tip of the screw is precisely oriented to fit the angular groove...don't turn the screw!
tn_Img_2986-3039.jpg

47.21 KB 
800 x 600 
1/26/2003

tn_Img_2986-3040.jpg

47.78 KB 
800 x 600 
1/26/2003

tn_Img_2986-3057.jpg

44.28 KB 
800 x 600 
1/26/2003

tn_Img_2986a.jpg
Now you can begin to see the inner workings of the Curta more clearly.
102.49 KB 
800 x 600 
1/26/2003
Now you can begin to see the inner workings of the Curta more clearly.
tn_Img_2987.jpg

78.50 KB 
800 x 600 
1/26/2003

tn_Img_2988.jpg
Now we're going to up the difficulty another notch.  Don't try this unless you have exceptional mechanical dexterity.  We're going to remove all of the ten carry shafts.  Remove the screw to the left of the ten carry assembly.  Then gently pull the entire assembly straight out.  This is easy... getting it back in on re-assembly is the hard part!
76.77 KB 
800 x 600 
1/26/2003
Now we're going to up the difficulty another notch. Don't try this unless you have exceptional mechanical dexterity. We're going to remove all of the ten carry shafts. Remove the screw to the left of the ten carry assembly. Then gently pull the entire assembly straight out. This is easy... getting it back in on re-assembly is the hard part!
tn_Img_2988a-3092.jpg

66.62 KB 
800 x 600 
1/26/2003

tn_Img_2988a-3093.jpg

74.10 KB 
800 x 600 
1/26/2003

tn_Img_2988a-3094.jpg

73.17 KB 
800 x 600 
1/26/2003

tn_Img_2989.jpg
It's bare!
104.63 KB 
800 x 600 
1/26/2003
It's bare!
tn_Img_2990.jpg

86.25 KB 
800 x 600 
1/26/2003

tn_Img_2991-3026.jpg
Here are the ten carry shafts.  There are two types.  The one on the left works with the main accumulator.  The right on works with the turns counter accumulator.
52.43 KB 
800 x 600 
1/26/2003
Here are the ten carry shafts. There are two types. The one on the left works with the main accumulator. The right on works with the turns counter accumulator.
tn_Img_2991-3027.jpg

39.85 KB 
800 x 600 
1/26/2003

tn_Img_2991-3028.jpg

52.36 KB 
800 x 600 
1/26/2003

tn_Img_2991-3116.jpg
Here are all of the tens carry assembly parts.  From left to right, the ten carry lever bearing block, the ten carry spring, the ten carry screw, and the ten carry lever.
38.05 KB 
800 x 600 
1/26/2003
Here are all of the tens carry assembly parts. From left to right, the ten carry lever bearing block, the ten carry spring, the ten carry screw, and the ten carry lever.
tn_Img_2991-3117.jpg

36.06 KB 
800 x 600 
1/26/2003

tn_Img_2991-3118.jpg

52.31 KB 
800 x 600 
1/26/2003

tn_Img_2991a.jpg

91.01 KB 
800 x 600 
1/26/2003

tn_Img_2992.jpg
Now we're going to remove the Reversing lever.
72.99 KB 
800 x 600 
1/26/2003
Now we're going to remove the Reversing lever.
tn_Img_2993.jpg
Remove the brass nut holding the top of the Reversing lever shaft.
76.53 KB 
800 x 600 
1/26/2003
Remove the brass nut holding the top of the Reversing lever shaft.
tn_Img_2994.jpg
Slide the Reversing shaft down until the slotted portion of the shaft slide through the bottom base.
102.13 KB 
800 x 600 
1/26/2003
Slide the Reversing shaft down until the slotted portion of the shaft slide through the bottom base.
tn_Img_2995-3041.jpg
And it's out!
47.24 KB 
800 x 600 
1/26/2003
And it's out!
tn_Img_2995-3042.jpg

46.82 KB 
800 x 600 
1/26/2003

tn_Img_2995-3043.jpg

50.97 KB 
800 x 600 
1/26/2003

tn_Img_2995-3044.jpg
The Reversing lever has a short black top spacer and longer lower spacer.
41.83 KB 
800 x 600 
1/26/2003
The Reversing lever has a short black top spacer and longer lower spacer.
tn_Img_2995-3045.jpg
As before, don't remove the Reversing lever knob from the shaft.  It containing a tiny spring and ball bearing just like the Setting shafts.
58.52 KB 
800 x 600 
1/26/2003
As before, don't remove the Reversing lever knob from the shaft. It containing a tiny spring and ball bearing just like the Setting shafts.
tn_Img_2995-3046.jpg

39.06 KB 
800 x 600 
1/26/2003

tn_Img_2995-3046-3087.jpg

40.30 KB 
800 x 600 
1/26/2003

tn_Img_2995-3046-3088.jpg

44.46 KB 
800 x 600 
1/26/2003

tn_Img_2995-3111.jpg
Now remove the three screws that hold the Locking ring onto the top of the Curta.  Keep the Curta upright so the transmission shafts do not fall out.
73.41 KB 
800 x 600 
1/26/2003
Now remove the three screws that hold the Locking ring onto the top of the Curta. Keep the Curta upright so the transmission shafts do not fall out.
tn_Img_2995-3112.jpg

75.29 KB 
800 x 600 
1/26/2003

tn_Img_2995-3113.jpg

80.21 KB 
800 x 600 
1/26/2003

tn_Img_2995-3114.jpg

78.71 KB 
800 x 600 
1/26/2003

tn_Img_2995-3115.jpg
Here's the top Locking ring and it's three screws.
45.53 KB 
800 x 600 
1/26/2003
Here's the top Locking ring and it's three screws.
tn_Img_2995-3115-3056.jpg

40.39 KB 
800 x 600 
1/26/2003

tn_Img_2996-2995.jpg
Now we're going to up the difficulty lever one more notch.  Don't proceed unless you're really good with precision tweezers and tiny-tiny c-clips!  5 of the 17 shafts have a total of 9 c-clips securing some of the transmission gears in place.  Remove all of these c-clips.  Push the first shaft up and slide the transmission gears off of the bottom.
104.88 KB 
800 x 600 
1/26/2003
Now we're going to up the difficulty lever one more notch. Don't proceed unless you're really good with precision tweezers and tiny-tiny c-clips! 5 of the 17 shafts have a total of 9 c-clips securing some of the transmission gears in place. Remove all of these c-clips. Push the first shaft up and slide the transmission gears off of the bottom.
tn_Img_2996a.jpg

74.86 KB 
800 x 600 
1/26/2003

tn_Img_2997-3053.jpg

47.84 KB 
800 x 600 
1/26/2003

tn_Img_2997-3054.jpg
Here's the top of the transmission shaft.
47.52 KB 
800 x 600 
1/26/2003
Here's the top of the transmission shaft.
tn_Img_2997-3055.jpg

45.88 KB 
800 x 600 
1/26/2003

tn_Img_2997a.jpg
Here's the transmission shaft and two gears.
56.87 KB 
800 x 600 
1/26/2003
Here's the transmission shaft and two gears.
tn_Img_2998-3029.jpg

43.78 KB 
800 x 600 
1/26/2003

tn_Img_2998-3030.jpg
Notice the shape of the left gear?  That's the Curta logo on the bottom of the machine!
40.57 KB 
800 x 600 
1/26/2003
Notice the shape of the left gear? That's the Curta logo on the bottom of the machine!
tn_Img_2998-3031.jpg

40.08 KB 
800 x 600 
1/26/2003

tn_Img_2998-3032.jpg
Here's a single and double gear with a tens carry lever bearing block and spring in the background.
42.90 KB 
800 x 600 
1/26/2003
Here's a single and double gear with a tens carry lever bearing block and spring in the background.
tn_Img_2998-3033.jpg
Here a single and triple gear.  There's only 1 triple gear shaft in the Curta and it's in the first position of the turns counter.
43.13 KB 
800 x 600 
1/26/2003
Here a single and triple gear. There's only 1 triple gear shaft in the Curta and it's in the first position of the turns counter.
tn_Img_2998-3034.jpg
The gear on the bottom is used to prevent the shaft from turning in conjunction with the tens bell (see below).
36.74 KB 
800 x 600 
1/26/2003
The gear on the bottom is used to prevent the shaft from turning in conjunction with the tens bell (see below).
tn_Img_2998a.jpg
Now it's really bare!
80.03 KB 
800 x 600 
1/26/2003
Now it's really bare!
tn_Img_2999.jpg
The Step drum can new be easily seen.  The big section is used with the main accumulator.
101.02 KB 
800 x 600 
1/26/2003
The Step drum can new be easily seen. The big section is used with the main accumulator.
tn_Img_3000.jpg
The small section (on the other side) is used with the turns counter accumulator.
86.32 KB 
800 x 600 
1/26/2003
The small section (on the other side) is used with the turns counter accumulator.
tn_Img_3001.jpg
The brass cam at the bottom of the shaft is an interlock that is used to prevent the turns handle from being lifted or pushed down once a turn is initiated.
83.10 KB 
800 x 600 
1/26/2003
The brass cam at the bottom of the shaft is an interlock that is used to prevent the turns handle from being lifted or pushed down once a turn is initiated.
tn_Img_3002.jpg

83.93 KB 
800 x 600 
1/26/2003

tn_Img_3003.jpg

84.68 KB 
800 x 600 
1/26/2003

tn_Img_3004.jpg

80.47 KB 
800 x 600 
1/26/2003

tn_Img_3005.jpg

80.33 KB 
800 x 600 
1/26/2003

tn_Img_3006.jpg
Now remove the three brass nuts on the bottom of the Curta.  This will allow the top plate to be separated from the bottom plate.
76.68 KB 
800 x 600 
1/26/2003
Now remove the three brass nuts on the bottom of the Curta. This will allow the top plate to be separated from the bottom plate.
tn_Img_3007.jpg
Here's the bottom.
67.38 KB 
800 x 600 
1/26/2003
Here's the bottom.
tn_Img_3008.jpg

71.05 KB 
800 x 600 
1/26/2003

tn_Img_3009-3089.jpg

61.80 KB 
800 x 600 
1/26/2003

tn_Img_3009-3090.jpg

57.64 KB 
800 x 600 
1/26/2003

tn_Img_3009-3091.jpg

56.57 KB 
800 x 600 
1/26/2003

tn_Img_3009a.jpg
Here's the top
78.11 KB 
800 x 600 
1/26/2003
Here's the top
tn_Img_3010.jpg

104.71 KB 
800 x 600 
1/26/2003

tn_Img_3011.jpg

71.23 KB 
800 x 600 
1/26/2003

tn_Img_3014-3012.jpg
The tens bell can be freed up by removing the small c-clip on the top of the main shaft housing.
78.19 KB 
800 x 600 
1/26/2003
The tens bell can be freed up by removing the small c-clip on the top of the main shaft housing.
tn_Img_3014a.jpg
This is the tens bell.  It is used to control the logic of the tens carry mechanism.
78.19 KB 
800 x 600 
1/26/2003
This is the tens bell. It is used to control the logic of the tens carry mechanism.
tn_Img_3015.jpg
The bottom level is used to clear the carry levers to a
The bottom level is used to clear the carry levers to a "no carry" or up position on the main accumulator. The raised portion of this ring is the point where the tens carry levers get pushed up. The third level is just like the bottom level except it is used with the turns counter accumulator.
tn_Img_3016.jpg
The next level up is used to prevent the transmission shafts from turning except when the mechanism is in a position that would be appropriate for motion to occur.  The forth level up is like this one except it is used to lock the turns carry transmission shafts when motion is not warranted.
76.46 KB 
800 x 600 
1/26/2003
The next level up is used to prevent the transmission shafts from turning except when the mechanism is in a position that would be appropriate for motion to occur. The forth level up is like this one except it is used to lock the turns carry transmission shafts when motion is not warranted.
tn_Img_3017.jpg
notice the notch on the bottom level of the tens bell.  This is used to input a count on any shaft where the ten carry position is set.
64.63 KB 
800 x 600 
1/26/2003
notice the notch on the bottom level of the tens bell. This is used to input a count on any shaft where the ten carry position is set.
tn_Img_3018.jpg

74.71 KB 
800 x 600 
1/26/2003

tn_Img_3019.jpg
This is the upper main casting.
67.38 KB 
800 x 600 
1/26/2003
This is the upper main casting.
tn_Img_3020.jpg
The two pins near the center are used to prevent the top carriage from turning  past it's 6 shift positions.
63.42 KB 
800 x 600 
1/26/2003
The two pins near the center are used to prevent the top carriage from turning past it's 6 shift positions.
tn_Img_3020a-3013.jpg

98.59 KB 
800 x 600 
1/26/2003

tn_Img_3021.jpg

72.88 KB 
800 x 600 
1/26/2003

tn_Img_3022.jpg

70.83 KB 
800 x 600 
1/26/2003

tn_Img_3023.jpg

69.02 KB 
800 x 600 
1/26/2003

tn_Img_3048.jpg

68.10 KB 
800 x 600 
1/26/2003

tn_Img_3049.jpg

67.94 KB 
800 x 600 
1/26/2003

tn_Img_3050.jpg

96.33 KB 
800 x 600 
1/26/2003

tn_Img_3051.jpg

97.00 KB 
800 x 600 
1/26/2003

tn_Img_3052.jpg

58.29 KB 
800 x 600 
1/26/2003

tn_Img_3058.jpg
Now to the top carriage.  Remove the nut on the center shaft.
80.16 KB 
800 x 600 
1/26/2003
Now to the top carriage. Remove the nut on the center shaft.
tn_Img_3059.jpg
Carefully lift the top sleave out.  The carriage must be kept flat and upright as there are 18 ball bearings under the spider spring.  Then lift the clearing plate off.
75.73 KB 
800 x 600 
1/26/2003
Carefully lift the top sleave out. The carriage must be kept flat and upright as there are 18 ball bearings under the spider spring. Then lift the clearing plate off.
tn_Img_3060.jpg
Now the spider spring can be seen.
70.30 KB 
800 x 600 
1/26/2003
Now the spider spring can be seen.
tn_Img_3061.jpg
There are two flat washers on top of the spider spring.  Once they are all removed the carriage casting can be studied.  The 17 ball bearings provide the positive numeral dial positioning.
80.32 KB 
800 x 600 
1/26/2003
There are two flat washers on top of the spider spring. Once they are all removed the carriage casting can be studied. The 17 ball bearings provide the positive numeral dial positioning.
tn_Img_3062.jpg

61.37 KB 
800 x 600 
1/26/2003

tn_Img_3063.jpg

70.74 KB 
800 x 600 
1/26/2003

tn_Img_3064.jpg
There's a brass sleeve on the inside of the center sleeve.
36.06 KB 
800 x 600 
1/26/2003
There's a brass sleeve on the inside of the center sleeve.
tn_Img_3065.jpg
Here's the bottom of the clearing plate.
55.12 KB 
800 x 600 
1/26/2003
Here's the bottom of the clearing plate.
tn_Img_3066.jpg
The linear gear (actually it's three laminations) turn each numerical dial to it's home or zero position.
64.48 KB 
800 x 600 
1/26/2003
The linear gear (actually it's three laminations) turn each numerical dial to it's home or zero position.
tn_Img_3066a-3072.jpg

32.31 KB 
800 x 600 
1/26/2003

tn_Img_3066a-3086.jpg

57.63 KB 
800 x 600 
1/26/2003

tn_Img_3067.jpg
Here are all of the main clearing plate parts.
68.01 KB 
800 x 600 
1/26/2003
Here are all of the main clearing plate parts.
tn_Img_3068.jpg

69.17 KB 
800 x 600 
1/26/2003

tn_Img_3069.jpg
To the left of the
To the left of the "1" a brass shaft can be seen. The plunger and spring at the top come out of this shaft. This mechanism keeps the clearing plate from turning unless the carriage is lifted.
tn_Img_3070.jpg

40.24 KB 
800 x 600 
1/26/2003

tn_Img_3071.jpg

41.92 KB 
800 x 600 
1/26/2003

tn_Img_3073.jpg
The top carriage less the clearing plate, springs, washers, and ball bearings.
107.14 KB 
800 x 600 
1/26/2003
The top carriage less the clearing plate, springs, washers, and ball bearings.
tn_Img_3074.jpg
This little pin presses out from the inside.
71.97 KB 
800 x 600 
1/26/2003
This little pin presses out from the inside.
tn_Img_3075.jpg
Once the pin is out the cage can be unscrewed from the carriage ring.
70.64 KB 
800 x 600 
1/26/2003
Once the pin is out the cage can be unscrewed from the carriage ring.
tn_Img_3076.jpg

69.86 KB 
800 x 600 
1/26/2003

tn_Img_3077.jpg

56.97 KB 
800 x 600 
1/26/2003

tn_Img_3078.jpg
This is the bottom of the case with the carriage casting and axles.
64.81 KB 
800 x 600 
1/26/2003
This is the bottom of the case with the carriage casting and axles.
tn_Img_3079.jpg

53.25 KB 
800 x 600 
1/26/2003

tn_Img_3080.jpg

75.16 KB 
800 x 600 
1/26/2003

tn_Img_3081.jpg
The pin just to the right of the center ring works in conjunction with the two pins in the top of the upper main casting to prevent the top carriage from turning past it's 6 shift positions.
80.65 KB 
800 x 600 
1/26/2003
The pin just to the right of the center ring works in conjunction with the two pins in the top of the upper main casting to prevent the top carriage from turning past it's 6 shift positions.
tn_Img_3083.jpg
The carriage casting and axles can be snapped out of the cage.
108.99 KB 
800 x 600 
1/26/2003
The carriage casting and axles can be snapped out of the cage.
tn_Img_3084.jpg
DO NOT remove the axles from the carriage casting.
80.41 KB 
800 x 600 
1/26/2003
DO NOT remove the axles from the carriage casting.
tn_Img_3085.jpg
The numerical dials can be slid off of the axles.
83.56 KB 
800 x 600 
1/26/2003
The numerical dials can be slid off of the axles.
tn_Img_3087-3024.jpg
So here how I kept it all straight.  It's real important to return each part to their original position.  Many are hand fit so put them back the way they were!
128.83 KB 
800 x 600 
1/26/2003
So here how I kept it all straight. It's real important to return each part to their original position. Many are hand fit so put them back the way they were!
tn_Img_3087-3025.jpg
And how many parts are there in a Curta?  It's official, there are 605 parts counting the metal storage can!
128.29 KB 
800 x 600 
1/26/2003
And how many parts are there in a Curta? It's official, there are 605 parts counting the metal storage can!
tn_Img_3087-3082.jpg
Thanks to my good friend Carl who loaned me his entire Curta collection to study and make this presentation from.  There's also a poster in the works that will show all of these parts of the Curta.
113.60 KB 
800 x 600 
1/26/2003
Thanks to my good friend Carl who loaned me his entire Curta collection to study and make this presentation from. There's also a poster in the works that will show all of these parts of the Curta.


Page Generated by STGThumb