à¤Ã×èͧÇÑ´¤ÇÒÁÊÑè¹ÊÐà·×͹ 461880: Vibration Meter + Laser/Contact Tachometer à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÃͺ ÁÔàµÍÃìÇÑ´Ãͺ 461880: Vibration Meter + Laser/Contact Tachometer Measures Acceleration, Velocity and Displacement plus RPM and Linear Surface Speed Features: Remote vibration sensor with magnetic adapter on 39"(1m) cable Wide frequency range of 10Hz to 1kHz RMS or Peak Value measurement modes Manual/Auto store/recall up to 1000 readings Data Hold and Auto shut-off Contact and Non-Contact (Laser) tachometer functions Uses a laser for greater distance non-contact measurements up to 4.9ft (1.5m) Large LCD with characters on display reverse direction depending on contact, photo, or vibration mode Windows® 95/98/NT/2000/XP compatible software (included) allows captured readings to be downloaded to your PC for further analysis For complete specs please download the product datasheet (not available for some accessories) 461880 Extech Virbration Meter à¤Ã×èͧÇÑ´¤ÇÒÁÊÑè¹ÊÐà·×͹