Hyperbolic Match Output
Model:Duplex Slide Rule No. 266 ("ELECTRONICS")
Scales Front: || LL3, LL1, LL2, LL2, A || B, BI, CI, C || D, dB/L , S&S, T&T||
Scales Back: ||XL, Xc, F, r1 || r2, L, Cf/C, Cz || L, Z, fo || Some of these Back Scales are multiple scales.
Gauge Marks: π and 2&pi are on A, B, C, D, BI, CI, and DI.
Construction: 25cm.; Plastic face on laminated wood ; Cursor is framed. Adjustable metal brackets.
Source: Herman's Archive
Information: Note: There is a qyestion regarding the existence of this slide rule. It was found on the Internet under this number. However the other Hemmi 266 that we see actual pictures of has no hyperbolic scales. So we have a dilemma as to the actuality of this slide rule.