| Manufacturer: |
Henri Chatelain |
| Country of Manufacture: |
France |
| Type: |
Boucher Calculigraphe |
| Number: |
|
| Date of Manufacture: |
|
| Scales: (Front) |
S, C, sqr root(2 scales) |
| Scales: (Back) |
L, cube root (3 scales) |
| Number of Scales: |
5 |
| Gauge Points: |
π |
| Slide Rule made from: |
Metal |
| Cursor made from: |
Metal |
| Cursor Lines: |
1 front, 1 back |
| Overall Length of Rule: |
5.3 cm diameter |
| Length of Scales: |
|
| Width: |
|
| Depth: |
1.7 cm |
| Weight: |
|
| Acquired from: |
John Clarke |
| Date: |
Dec 2004 |
| Condition: |
Good |
| Accessories: |
|
| Comments: |
|