Hyperbolic Match Output

Number:76a

Maker:PICKETT & ECKEL (USA)

Model: 4 Deci - Log Log Vector Hyperbolic

PHOTO

Scales Front: || N₁,1/N₁, N₂, 1/N₂, DF/M || CF/M, Th, Sh, Sh, CI, C || D, N₃, 1/N₃, N₄, 1/N₄ ||

Scales Back: ||Three cube root scales ³ √, DF|| CF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ ||

Gauge Marks: π is on C, D. Also on CF and DF on the front scales; mark 1 ° is on ST.

Cursor Front:

Cursor Back:

Construction: 25 cm.; White plastic film over Magnesium alloy, Cursor is not framed, Adjustable metal brackets.

Date: 1947

Source: ISRM

Information: Variation of 76.