Post 1491 Chem Rule (same as Hemmi 257)

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Country of manufacture: Japan,            Date of manufacture: ____
Overall length: 32.1 cm,          Width: 4.5 cm,           Weight: 133.2 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 line, 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, e, C, plus others specific to this type of specialty rule. ]
Condition: C3-C4 (Very minimal to minimal signs of use)
Came with: Original dark brown leather case

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