Manufacturer: |
Dietzgen (Gilson) |
Country of Manufacture: |
U.S.A. |
Type: |
Binary Circular |
Number: |
|
Date of Manufacture: |
1940+ |
Scales: (Front) |
C, CI, A, K, L, 4 rev LL, Binary, Fractions,Drill size and mm conversion |
Scales: (Back) |
( Degrees, Sine, Tangent ) * 3, Fractions-Decimal Equivalents |
Number of Scales: |
21 |
Gauge Points: |
π, q |
Slide Rule made from: |
Aluminium |
Cursor made from: |
Plastic. Two on front, 1 on back |
Cursor Lines: |
1 on each cursor |
Overall Length of Rule: |
Diameter 21 cm |
Length of Scales: |
|
Width: |
|
Depth: |
0.2 cm |
Weight: |
135 gm |
Acquired from: |
Peter O'Brien |
Date: |
Sept 2000 |
Condition: |
Good |
Accessories: |
Plastic case. Good condition
Instructions (English). Good condition
|
Comments: |
Re-badged Gilson Binary Circular Type 2
Two major articles on Gilson Circular Rules,
JOS Vol 9 No 1, JOS Vol 9 No 2
|