supply of digital vibration meter pen-type ultradigital vibration meter pen-type ultra,digital vibration meter pen-type ultra portable for displacement measurement. similar to mo del no-vm 8200p spec: display- 4 digit backlit lcd, transducer?piezo electric ceramic accelerometer (shea r-type), acceleration range- 0.1 - 199.9m/s2, velocity range- 0.1-199.9m/s, displacement range- 0.001-1.9 99mm, frequency range for measuring- (acceleration- 10hz-1khz(lo) / 1khz-15khz-15khz in (hi), velocity frequency range-10hz-1khz, displacement frequency? 10hz-1khz), accuracy- +/-5% to +/-2 digit, signal o utput- ac output 2 v peak (display full scale), with max hold function, power- 09 volt battery, operating con dition- 0-40 degree celecious/30-90% rh, product wt ?appx-147g, dimension-183 x 67 x 30 mm. accessori es- small probe tip built in, long probe tip. make- lutron, htc, metrix, acd machine or similar [ warran ty period: 30 months after the date of delivery ] ]