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Dietzgen 1749 10" Decimal Trig slide rule

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Description

Maniphase Multiplex Style M Decimal Trig Type Maniphase Rule. DF(CF,CIF,CI,C)D,L + K,A(B,T,ST,S)D,DI. Body: Aluminum, white plastic laminate scale faces, reverse numerals in red. Cursor: Flat plastic plates, white shoes, screw assembly. Case: Folded and sewn flap and snap sheath, spring latch and bail. Top: DIETZGEN.

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