A laser allows precise RPM measurement from 20 feet! Our new tachometers incorporate laser technology yet retain rugged construction and reliable quality components; both offer incredible value and versatility as they perform non-contact and contact applications via the included contact adapter. Capture fast speeds with laser precision Incorporating the precise laser technology and user-friendly functions as our standard tachometers, the Deluxe Models provide exceptional accuracy in measuring speed and length via a 12'' wheel; the larger wheel rotates more slowly than a standard 6'' wheel, enabling reliable and safe registration of high speeds. These superior instruments also feature a contact adapter, conveniently allowing both non-contact and contact measurement.