Hyperbolic Match Output
Maker:RICOH (Japan San - Ai Group)
Scales Front: || Sh2, Sh1, Th, A || BI, S, T, CI, C || D, DI, LL3, LL2, LL1 ||
Scales Back: || X2, X1, P2, P1 || Q, Y, L, LX, I || I, Lθ1 & Lθ1,Lθ2 & Lθ2 , LY ||
Information: Note: Is similar to Relay No. 158. Do not have a picture or manual for this slide rule. Hopp does not list it. Need complete information: listing of details of dimensions, physical appearance, scales, gauge marks,cursor lines, etc.