DIGITAL TACHOMETER Model : DT-2244, DT-2245, DT-2238 Item Model Measurement & Range Photo/Contact Tachometer Photo Tachometer DT-2238 DT-2244 Photo Tachometer : 5 to 99,999 RPM. 5 to 99,999 RPM. Contact Tachometer DT-2245 0.5 to 19,999 RPM. m/min. 0.05 to 1,999.9 m/min. ft/min. 0.2 to 6,560 ft/min. inch/min. 2 to 78,740 inch/min. Contact Tachometer : Surface Speed : m/min. 0.05 to 1,999.9 m/min. ft/min. 0.2 to 6,560 ft/min. RPM: Resolution RPM: 0.1 RPM ( < 1,000 RPM ). 1 RPM ( 1,000 RPM ). 0.
