- Function: A 5-digit train counter that detects the frequency of a recording instrument or a mechanical back-and-forth movement. It shows the count on a digital display with a rotating zero-return mechanism; after returning to zero, counting starts again from zero. - Easy to use: accurate counting in daily use, a practical counter-tool with no space restrictions. 0-99999 range. Outer material is plastic and metal. Color black. - Reset and portability: reset is done by turning the reset knob on the counter. Small size, light weight, comfortable to hold, easy to carry and install. - High-quality materials: constructed from high-quality metal and plastic with high hardness and stable dimensions. Rust protection and high strength. Plastic resists aging, is highly transparent and easy to observe, contributing to a longer service life. - Use scenarios: ideal for counting machine cycles or reciprocating strokes in manufacturing or maintenance; suitable for lab testing rigs to tally piston or sensor movements; useful in DIY projects or classroom demonstrations to illustrate cycle counts.