Skala SLPP

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Country of manufacture: Poland,            Date of manufacture: ____, Serial No. 265918
Overall length: 33.6 cm,          Width: 5.1 cm,           Weight: 101.8 gms
Materials: all plastic, plastic end braces glued onto back side of rule
Cursor: 4.0 X 5.6 X 0.5 cms; all plastic; lines = four hairlines, front side only
Scales: 11, extensions on X², X, 1/X
Front: log, √(1-X²), X³, X² [ X², 1/X, M, X ] X, sin, tg, s-t
Back: Blank
Gauge Marks: [ π, 1/π, C, ρ, ρ'', ρ', C1, ρ^o ]
Condition: C4 (minimal signs of use)
Came with: Original black plastic sheath
Note: The 'M' scaled on this rule is a little unusual. For more information, see this article.

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