Xuesh 6171 Hyperbolic Log Log Duplex

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Country of manufacture: China,            Date of manufacture: ____
Overall length: 33.2 cm,          Width: 4.8 cm,           Weight: 131.3 gms
Materials: Celuloid laminate over bamboo, metal end braces, adjustable
Cursor: 3.8 X 5.9 X 1.1 cms; plastic runners holding plastic lens, adjustable; lines = single lines, front and back
Scales: 28, no extensions
Front: lgln 1I, lgln 2I, lgln 3I, DF [ CF, CIF, H1, H2, CI, C ] D, lgln3, lgln2, lgln1
Back: sh1, sh2, K, A [ B, sin, H', tg1, tg2, C ] D, DI, lg, th
Gauge Marks: [π, e, e^-1, 1° (1745), R (573), 785 ]
Condition: C5-C6 (Normal to heavy signs of use; noticeable fading of some scale lettering)
Came with: Orig. green cardboard case

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