Hyperbolic Match Output

Number:77

Maker:PICKETT & ECKEL (USA)

Model: No. 4 Vector Hyperbolic Log Log

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

Scales Back: || 1/N₁, 1/N₂, 1/N₃, 1/N₄, DF/M || CF/M, Th, Sh, Sh, CI, C || C₀ & D, N₁, N₂, N₃, N₄ ||

Gauge Marks: π is on C, D. Also, CF, DF on the front scales. R is shown on front C and D; marks 1° , ' and " are on ST

Cursor Front:

Cursor Back:

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

Date:

Source: MOL and WKR

Information: