Scientific Instruments Co. (SIC) 1610

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Scales:
Front: EI, CI C, D, A, K, LL0, LL1, LL2, LL3
Back: LL3, LL2, LL1, L DI, D, tan(45-84), sin(5.8-90), tan(5.8-45), sin(0.58-5.7), tan/sin(0.1-0.57)

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