... 3)high accuracy and decimal point setting Frequency meter & Tacho meter DM series Multi-function Digital Panel Meter 1) Small size, easy mounting, 36Hx72W ... , 42Hx79W, 48Hx96Wmm;2) Can measure frequency, tacho and count pulse ... , 3 in 1, high cost effective; 3) Frequency range: 1-9999 Hz, tacho range: 60-9999 RPM, ...