Faber Castell Tachymeter 1/38

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Country of manufacture: Germany,            Date of manufacture: 1943
Overall length: 30.0 cm,          Width: 3.9 cm,           Weight: 113.2 gms
Materials: Closed form simplex; celluloid laminate over wood
Cursor: 4.2 X 4.1 X 1.2 cms; metal runners, metal framed plastic lens; lines = two on front, one on bottom edge
Scales: 15
Front: 27 cm // L, A [ B, CI, C ] D , P || sin, tg
Well: 31-59 cm
Back: Instructions for use
Slide Back: 1-cos² (5.7°-20° and 1.85°-5.7°), sin-cos (5°-20°), cos² (0.5°-6° and 20°-5°)
Gauge Marks: [π, C, C₁, M, ρ, ρ', ρ", 7854]
Condition: C5 (signs of normal use)
Came with: nothing

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