Hyperbolic Match Output
Maker:FLYING FISH (China)
Model:No. 1018 Electricians slide rule ( See Shanghai China No. 1018)
Scales Front: || Θ°, RΘ, P', P || Q, QI, L, I || J, J', T, GΘ || This has Gudermannian scales., and is not folded.
Scales Back: || lnI-1, lnI0, lnI1, K1, A1 || B1, tgoctgo,sinocoso, C || D, DI, ln, ln0, ln-1 ||
Gauge Marks: π is on A1, B1, C, and D; π/4 is on A1 and B1; 1° and R are on scales C and D; 1/R is on B1
Cursor Back: π/4 on left and HP(**) on right over the A & B scales.
Construction: 25 cm.; Plastic; Cursor is not framed. Has fixed plastic end brackets.
Information: Variation has no number, but scales are the same. Cursor has FF Logo.