Digital tachometer
4th July 1975, Page 48
4th July 1975
Page 48
Page 48, 4th July 1975
— Digital tachometer
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Now available from Graham and White Instruments — the HT33, a portable, batteryoperated digital tachometer.
The speed of shafts is obtained by the conventional technique of a rubber conical contactor held against a shaft end. This drives an optical encoder generating 60 pulses • per revolution.
The measuring range is from 0 to 20,000rev/min. Attachments
The four-digit display employs red light emitting diodes. Power is derived from a 6V dry cell battery.
are available for linear speed measurements of mm/sec and m/sec.
Price: £69.
Availabl from: Graham and White Instruments Ltd, 135 Hatfield Road, St Albans, Herts, ALI 4LZ.