Extech 461700 PocketTachT Mini Photo Tachometer features: non-contact RPM Measurement; Large easy to read LCD display; Hold button freezes displayed readings; Non-contact integral light beam model with ideal measurement range up to 6" (300mm) distance, etc.
Extech 461750 PocketTachT Mini Contact Tachometer features: rpm and surface speed measurements; Large easy to read LCD display; Hold button freezes displayed readings; Surface wheels enable tachometer to measure linear surface speeds in ft/min, m/min, and yd/min, etc.
Extech 461825 Combination Photo Tachometer Stroboscope features: 2 meters in one — Stroboscope to analyze rotating objects and Tachometer to measure rpms; Stroboscope course and fine flash rate adjustments to freeze and analyze rotating objects, etc.
Extech 461830 Digital StroboTach 115VAC 60Hz features: Freeze motion and analyze rotating objects without contact; Checks and analyzes motion and speed by simply aiming and synchronizing its flash rate (fpm) with a rotating object; rpms on 4 digit LED display; High accuracy over a wide, dynamic range via exclusive microcomputer LSI circuit and crystal control time-base, etc.
Extech 461891 Contact Tachometer features: Fast and accurate RPM and surface speed measurements; Make contact measurements of rotating objects; Measure linear surface speeds in ft/min or m/min using three accessory wheels provided, etc.
