THACOMETER The SKF Multi–functional Digital Tachometer TMRT 1 is a user–friendly and accurate digital tachometer utilizing laser or contact for measuring rotational and linear speed. Equipped with a laser and contact adapter, it offers excellent speed measurement versatility in five different modes. Additionally, the large angular range of ± 80° to target facilitates the easy measurement in areas where straight–line access is difficult. The laser optical system allows easy and quick speed measurement at a safe distance from rotating machinery. Technical data Designation    TMRT 1 digital tachometer Display    Inverting LCD Vertical 5 digit display Display functions    180º Inverting Rotational speed range    Optical mode: 3-99,999 rpm (or equivalent in rps) Contact mode: Max. 50 000 rpm for 10 sec (or equivalent in rps) Linear speed range    0.30-1 500.0 Meters or Yds/min. (4 500 ft/min) or equivalent in seconds Measurement modes    Optical; rpm and rps (also Count and Time) Via contact adapter; rpm and rps, meters, yards, feet, per min and per sec. Count total revs, meters, feet, yards Measure Time interval in seconds between pulses (reciprocal rate) Speed Capture feature - Maximum, Minimum or Average rate Laser optical range    50 mm - 2 000 mm (1.9 - 78.7 in.) Angle of operation    ± 80º Light source    Class II laser diode Accuracy speed modes only    0.01%, ± 1 digit Resolution range features    Fully Auto ranging up to 0,001 digit or ± 1 digit fixed, user selectable On target indicator    Yes Low battery indicator    Yes Memory features    - Last reading held for 1 minute - Program settings retained in memory after power off Auto switch off    After 1 minute Contact adapter    Included complete with rpm cone and removable metric wheel assembly Battery type    4 x AAA alkaline cells Unit dimensions    213 x 40 x 39 mm (8.3 x 1.5 x 1.5 in.) Unit weight    170 g (5.9 oz) Carrying case dimensions    238 x 49 x 102 mm (9.3 x 1.9 x 4.0 in.) Total weight (incl. case)    355 g (12.5 oz) Warranty    12 months