| Manufacturer: |
Keuffel and Esser |
| Country of Manufacture: |
U.S.A. |
| Type: |
68 1210 Log Log Duplex Decitrig |
| Number: |
520899 |
| Date of Manufacture: |
|
| Scales: (Front) |
LL02, LL03, DF [ CF, CIF, CI, C] D, LL3, LL2 |
| Scales: (Back) |
LL01, L, K, A [B, T, SRT, S] D, DI, LL1 |
| Number of Scales: |
21 |
| Gauge Points: |
π, re, e |
| Slide Rule made from: |
Bamboo and Plastic |
| Cursor made from: |
Plastic with Metal Frame |
| Cursor Lines: |
1 front, 1 back |
| Overall Length of Rule: |
31.7 cm |
| Length of Scales: |
25 cm |
| Width: |
4.1 cm |
| Depth: |
0.7 cm |
| Weight: |
95 gm |
| Acquired from: |
Sphere Research |
| Date: |
June 2000 |
| Condition: |
Good |
| Accessories: |
Came as the complete 68-1215 set, i.e.
Leather case. Good condition
Box. Medium condition
Manual (English). Good condition
|
| Comments: |
|