Counter available in various models described below.
The Mechanical Meter Counters M310.A01 and M310.A02 are calibrated by the German Physical-Technical Institute (PTB) and approved for calibration measuring systems.

| Counting mode: | In direction of defined rotation, adding. Subtracting in reverse direction. | 
| Display: | 5-digit, 999.99 m/cm | 
| Digit size: | Approx. 4.5 mm high, white on black background, decimal in red | 
| Drive shaft: | Projecting on both sides, Ø 4 mm | 
| Reset: | Reset to zero by pushing the lever (with socket on left or right side, at choice). | 
| Max. Speed: | Max. 60.00 m/min. | 
| Base plate: | Steel of 2 mm thickness, galvanized | 
| Housing material: | Gray plastic | 
| Ambient temperature: | 0...+60 °C | 
| Weight: | Approx. 130 g |