Contact Tachometer MODEL : CT-100 Display : Red 7 Seg LED Resolution : 1 RPM Range : 0-9,999 RPM Accuracy : +/- 1 RPM Operating Voltage : 6 V DC Battery Required : 4 Nos 1015 Type (Pen Torch Cells) Frequency Standard : Quartz Crystal Gating Period : 1 sec. Memory : Actuated by Touch Switch. Battery : Low Inidication Provided Auto Shut off facility built-in. Accessories : Male Female Rubber Centres Rubber Disc to measure Surface Speed directly. Weight : approx 300 grms Qty :