Hyperbolic Match Output
Maker:HAIOU PAI (China)
Scales Front: || LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| CF is folded at π
Scales Back: || Th, K, A || B, T&T, ST, S&S, C || D, DI, Sh2, Sh1 ||
Gauge Marks: π is on A, B, C, D, CF, DF, CI, DI, and CIF
Cursor Front: There is a mark on the right over the CF & DF scales for mutiplication of C and D by 36.
Cursor Back: Has marks HP(**) at right , and π/4 on left over the A and B scales. On right over
C and D scales is √4/π
Construction: 25cm.; Plastic; Cursor is not framed. Adjustable metal brackets.
Source: Steve Seale Collection