| Manufacturer: |
Pickett and Eckel |
| Country of Manufacture: |
U.S.A. |
| Type: |
N904-ES. Trig and Decimal Keeper |
| Number: |
123 |
| Date of Manufacture: |
|
| Scales: (Front) |
K, A [ B, T, S, CI, C] D, L |
| Scales: (Back) |
K*, A* [ B*, T*, S*, CI*, C*] D*, L* |
| Number of Scales: |
18 |
| Gauge Points: |
π, R |
| Slide Rule made from: |
Aluminium |
| Cursor made from: |
Plastic |
| Cursor Lines: |
1 front, 1 back. Cursor slightly magnifying |
| Overall Length of Rule: |
30.8 cm |
| Length of Scales: |
25.0 cm |
| Width: |
3.2 cm |
| Depth: |
0.3 cm |
| Weight: |
80 gms |
| Acquired from: |
Dick Schwartzer |
| Date: |
Dec 2001 |
| Condition: |
Good |
| Accessories: |
Leather sheath. Good condition
Manual (English). Good condition
|
| Comments: |
|