Manufacturer: Diwa
Country of Manufacture: Denmark
Type: 901
Date of Manufacture: 1952+
Scales: (Front) LL0, LL00, A [ B, T, ST, S] D, DI, K
Scales: (Back) L, LL1, DF [CF, CIF, CI, C] D, LL3, LL2
Number of Scales: 20
Gauge Points: π
Slide Rule made from: Mahogany and Plastic with Metal End Pieces
Cursor made from: Plastic
Cursor Lines: 1 front, 1 back
Overall Length of Rule: 31 cm
Length of Scales: 25 cm
Width: 4.0 cm
Depth: 0.6 cm
Weight: 96 gm
Acquired from: Robert Holden
Date: Feb 2001
Condition: Medium
 Cardboard box.  Poor condition
 Leather case.  Good condition