Hyperbolic Match Output

Number:99

Maker:SIDA (China)

Model: No. 1002

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. Marks 1° and R are on back scales C and D; π/4 is on A and B; v is on K.

Cursor Front:

Cursor Back: has line HP(**) on right over A and B scales.

Construction: 25 cm.; Plastic, Cursor is not framed. Adjustable metal brackets.

Date:

Source: R.H. and WKR and PVM

Information: Similar to Flying Fish & Ruyi 1002 See 30, 92a.