Hyperbolic Match Output
Maker:COMPASS (JAPAN San-Ai Group)
Scales Front: || Sr, SΘ, P', P || Q, CF, CI, C || D, DF, LL2, LL3 || Note: LL1' is at end of C; Sr is radians; SΘ deg
Scales Back: || Sh2, Sh1, A || B, K, Th, C || D, Tr1, Tr2, db || Note: db is 20 lg x
Gauge Marks: π is on A, B, C, D, CF and DF; π/4 and M is on A and B; C and C1 are on C and D.
Construction: 25 cm.; Plastic face on laminated wood ; Cursor is not framed; adjustable metal end brackets.
Source: Rod Lovett Collection