LUTRON DT 2236 Photo Contact Tachometer
r) Measuring Range : a. Photo 2, 5 to 99, 999 rpm b. Contact Tachometer : 0.5 to 19, 999 rpm c. Surface Speed : 0.05 to 1, 999.9 m/ min : 0.2 to 6, 560 ft/ min Resolution : Tachometer a. 0.1 rpm for 2.5 to 999, 9 rpm b. 1 rpm for over 1, 000 rpm Surface Speed a. 0.01 m/ min over 10m/ min b. 0.1m/ mi