Hyperbolic Match Output

Number:46a

Maker:HEMMI (Japan)

Model:Duplex Slide Rule No. 255D (For Expert Electrical Engineer)

PHOTO

Scales Front: || L, K, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 ||

Scales Back: ||Sh1, Sh2, Th, A || B, TI2&TI2, TI1&TI1, SI&SI, C || D, DI, X, Θ || X is radians; Θ degrees.

Gauge Marks: π is on CF and DF and π/2 is on X; Mark c is on back scale C; e is on LL2 and LL3.

Cursor Front:

Cursor Back:

Construction: 25cm.; Plastic face on laminated wood ; Cursor is framed. Adjustable metal brackets.

Date: 1966+

Source: SPHERE

Information: