Old Graphoplex slide rule electronics model n° 698

This rule was designed to provide not only a direct solution to reactance calculations (capacitive and inductive), as well as to problems relating to resonant circuits (at high and low frequency), but also to display in all these case, the real value of the result, thus leaving no risk of confusion of power of 10.

Ruler in very good condition with its hard case and instructions.

Electronics model no. 698.

Length: 34 cm.

Width: 5 cm.