Thornton P241 Log Log Duplex

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Country of manufacture: England,            Date of manufacture: ____
Overall length: 36.0 cm,          Width: 5.1 cm,          Weight: 117.2 gms
Materials: all plastic, plastic end braces glued onto back and front of rule
Cursor: 3.9 X 6.0 X 0.9 cms; all plastic, adjustable; lines = One on front, one on back
Scales: 20, no extensions
Front: 25.5 cm., K, DF [ CF, CI, C ] D, A, 10 in..
Back: LL2, LL3, L, A [ B, CI, C ] D, S, ST, T
Gauge Marks: [ π, 1745, S (2063), L (2303), m (3438), U (5730) ]
Condition: C4-C5 (minimal to normal signs of use)
Came with: Original black cardboard-stiffened plastic case w/snap closure; instruction booklet

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