Hyperbolic Match Output

Number:83

Maker:PICKETT & ECKEL (USA)

Model: X-4 Vector - Type LOG LOG Dual - Base Speed Rule

PHOTO

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

Scales Back: || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, Ln, L, CI, C || D, LL3&LL3, LL4&LL4 ||

Gauge Marks: π, π/4, and R are on C, D, CF, DF, CF/M, DF/M, CI, DI, and CIF; e is on C and D; and marks 1°, ' and " are on ST. (Comes in plush box).

Cursor Front:

Cursor Back:

Construction: 25 cm.; Brown, with white slide piece, Cursor is framed, Adjustable metal brackets.

Date:

Source: ISRM

Information: (Comes in plush box).