Hyperbolic Match Output
Maker:RICOH (Japan San - Ai Group)
Model: No. 159
Scales Front: || LL-1, LL-2, LL-3, A || B, BI, K, CI, C || D, LL3, LL2, LL1 || Note: A number of the scales are extended.
Scales Back: || Sh1, Sh2, P2, P1 || Q, Sr, Sθ&Sθ, Th, C || D, T2, T1, L || Note: Sr is radians; Sθ is degrees
Gauge Marks: π is on C, and D; 2π is on C and D; C is on C and D; Marks f and ρ0 are on C and D; e is on LL2 and LL3.
Construction: 25 cm.; Plastic face on laminated wood ; Cursor not framed. Adjustable metal brackets.
Source: S.T. and WKRM
Information: (Have copy of manual from Scott Pawelka).