| Manufacturer: |
Dring and Fage |
| Country of Manufacture: |
England |
| Type: |
4-Slide Proof Rule |
| Number: |
|
| Date of Manufacture: |
|
| Scales: (Front) |
?, ?, ?//A, [Proof] C, ? [C] D // ?, ? |
| Scales: (Back) |
SL [B] SS, A [B] MD |
| Number of Scales: |
17 |
| Gauge Points: |
Pins: On front 1MG at 187, MS at 47, MR at 532; On reverse MB at 222, 1MG at 278 |
| Slide Rule made from: |
Boxwood |
| Cursor made from: |
|
| Cursor Lines: |
|
| Overall Length of Rule: |
30.3 cm |
| Length of Scales: |
30.3 cm |
| Width: |
5.0 cm |
| Depth: |
1.0 cm |
| Weight: |
154 gms |
| Acquired from: |
Debs Wilding |
| Date: |
May 2002 |
| Condition: |
Medium |
| Accessories: |
|
| Comments: |
A, B, C, D not the modern scales
|