Manufacturer: Thornton
Country of Manufacture: England
Type: PIC Engineer's F3649
Date of Manufacture:  
Scales: (Front) LL2, A [B, CI, C] D, LL3
Scales: (Back) S, L, T, temp resistance
Number of Scales: 11
Gauge Points: π, e, C, C1, M
Slide Rule made from: Wood and Plastic
Cursor made from: Metal and Glass. Separate magnifying lens.
Cursor Lines: 3
Overall Length of Rule: 30.6 cm
Length of Scales: 25.0 cm + 2.5 cm extension
Width: 4.3 cm
Depth: 1.3 cm
Acquired from: Andrea Tozzo
Date: Dec 2003
Condition: Good
 Instructions (English). Medium condition
 Cardboard case. Poor condition