Hyperbolic Match Output
Model: No. 6171
Scales Front: || Ln1I, Ln2I, Ln3I, DF || CF, CIF, H2, H3, CI, C || D, Ln3, Ln2, Ln1 || CF is folded at √10
Scales Back: || sh2, sh3, K, A || B, sin2cos2, H'2, tg2ctg2, tg3ctg3, C || D, DI, lg, th2 ||
Gauge Marks: π is on A, B, C, D, and DF; 1 ° and R are on C&D.
Cursor Front: : has HP(**) line on right.
Construction: 25 cm.; Plastic; Cursor is not framed. Adjustable metal brackets.
Source: PVM and Xu Guisheng
Information:Similar to SIDA 1002.