Simplicity and portability of devices are two key features that make it easier to conduct field work and maintenance. Dwyer’s TAC-L Portable Digital Tachometer measures rotational speed either by contacting a rotatable head to the shaft of the object, or using photo sensor to detect the reflections from the laser—the laser target can record from a distance of up to 20 inches. It includes a large LCD with a backlight, and fits in the hand of the user. Supplied with this model are three contact rotational heads, a contact surface wheel, and a protective carrying case. Dwyer Instruments Inc.
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