Hemmi 257 Chemical Engineering (same as Post 1491)

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Country of manufacture: Japan,            Date of manufacture: Oct 1966
Overall length: 32.0 cm,          Width: 4.5 cm,           Weight: 125.8 gms
Materials: Celluloid laminate over bamboo, metal end braces, adjustable
Cursor: 3.0 X 5.7 X 1.2 cms; plastic runners, metal framed glass lens, adjustable; lines = single hairline, front and back
Scales: 23, some specialized
Front: L, A, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Back: Ch (A~M), Ch (N~Z), M₁ [ M₂, T°F, T°C, T°K, F_(t) ] P Kg/cm², P mm Hg, P In.Hg Vac., tω
Gauge Marks: [π, C, e, many chemical symbols ]
Condition: C2-C3 (Mint to very minimal signs of use)
Came with: Original box, leather case

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