The easy-to-use TES-1500 digital tachometer measures revolutions/min (rpm) from 10rpm-99.999rpm with a floating decimal point giving constant accuracy. This hand-held microprocessor based optical and contact tachometer features an easy-to-read, five digit LCD display, maximum/minimum and hold facilities. A single button control enables speed measurements to be carried out, precise speed measurement is obtained by placing reflective tape on a rotating component, the tachometer will read the rpm either by non-contact measuring or by contact measuring. A beam alignment indicator shoes the operator when correct positioning has been achieved. Contact Electronic Temperature instruments Ltd (UK) on Email: sales@etiltd.co.uk (whole item)