Hyperbolic Match Output
Model:ARISTO HyperLog No. 0972
Scales Front: || LLoo, LLo1, LLo2, LLo3, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1, LLo ||
Scales Back: || H2, Sh2, Th, K, A || B, T&T, ST, S&S, P, C || D, DI, Ch, Sh1, H1 ||
Gauge Marks: π is on A, B, C, D, CF, DF,CI, CIF, and DI. The marks Q' and Q'' are on back scale C; e is on LL2 and LL3.
Cursor Front: There's a vertical mark on right over CF/DF scales (for multiplication of the value on C/D by 36); &pi/4 is left over the A and B scales; and √4/πis right over the C and D scales.
Cursor Back: kW at top middle ; PS2 at right on vertical line over A & B scales; There is a π/4 vertical line on left over the A & B scales, and √4/π on right over the C and D scales.
Construction: 25 cm.; Plastic; Cursor is not framed. Has fixed plastic end brackets and rubber feet.
Date: 1969 - 1977
Source: Herman van Herwijnen Archive