The RS Series is a small size ratchet counter.  It comes in 4,5 or 6 digits and digits size is 4.4 x 2.8mm. The counter, which is part of the RS series, has a shaft on the right side. This shaft can move either upward (top-going) or downward (top-coming). Through the ratchet movement mechanism in its input shaft, it can tally up counts at a fast pace, ranging from 300 to 600 counts every minute. Additionally, for ease of use, it’s designed to be placed on a base and features a handy reset knob for quick adjustments.