KLPZ Hydraulic rule of some type

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Country of manufacture: USSR (Tashkent?),            Date of manufacture: ____
Overall length: 33.9 cm,          Width: 4.9 cm,           Weight: 98.6 gms
Materials: printed paper or plastic sheets laminated onto wood, plastic end braces glued onto both back and front of rule
Cursor: 2.3 X 5.8 X 1,1 cms; all plastic, adjustable; lines = single line, front and back
Scales: many specialized, in addition to B, C, and D on back side
Gauge Marks: [ π ]
Condition: C5 (signs of normal use)
Came with: Original cardboard box and instructions (in Russian)

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