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> Antique tachometer 7/6 30,000 still works, with case
Antique tachometer 7/6 30,000 still works, with case
Antique Tachometer S 7/6 30,000- with case and instruction card
The Cut Meter Wheel has a circumference of 0.1 meter= 0.328 feet. Surface speed in feet per minute may be obtained by multiplying Tachometer reading by .328
The Grooved Pulley is for use when the end of a shaft is inaccessible. It may be connected to the shaft by means of the cord furnished. The R.P.M. being measured is, n=vd/D in which, v=R. P. M. shown by instrument, d=diameter of grooved pulley, 25 millimeters or .984 inches and D=diameter of shaft.
