Russian Leningrad 5161-57 r. 1971

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Country of manufacture: Soviet Union,            Date of manufacture: 1971
Overall length: 28.1 cm,          Width: 3.9 cm,           Weight: 81.7 gms.
Materials: Celluloid laminate over wood
Cursor: 3.0 X 3.7 X 0.6 cms; metal framed plastic lens; lines = single line, front only
Scales: 9
Front: 25 cms // K, A [ B, CI, C ] D, LL3 || LL2
Slide Back: [ S, ST, T ]
Gauge Marks: [ π, C, C1, M, e, ρ'', ρ^o, ρ,, ]
Back: Conversion Factors and Physical Constants
Condition: C6-C7 (May not have been handled or stored well; warped to some degree, some small delamination)
Came with: Cardboard box

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Bottom Edge:

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