Hyperbolic Match Output
Maker:Paper Slide Rule (CHINA)
Model: No Number and unknown Name
Scales Front: || L, LL1, DF || CF, CIF, CI, C || D, LL3, LL2|| Very crudely made - scales are all black color. CF folded at π
Scales Back: || LL0, LL00, A || B, T, ST, S || D, Th, Sh2, Sh1|| Similar to K&E 4083-3 (1939-1946) See 54
Gauge Marks: π is on A, B, CF, and DF; π/4 is on A and B scales; The marks 1°, ' and " are on scale ST.
Construction: 25 cm.; Paper face glued to wood ; Cursor is not framed; Adjustable metal brackets.
Source: R.H. and WKR and CLAY
Information: Very crudely made - scales are all black color. There are different versions of this type of Slide Rule. One has the number <4083-3> on the slide. Another has black colored brackets. All have different cursors. Similar to K&E 4083-3 (1939-1946) See 54.