Railway Square

1. Aluminum alloy ruler body: square tube structure, high mechanical strength, stable straightness, never deform, stable product performance.

2. Insulation board: made of epoxy glass fiber board (commonly known as FR4), high mechanical strength performance at minus 40℃-120℃, stable mechanical ruler size, never deformed, stable electrical insulation performance in high humidity environment.

3. Probe: imported stainless steel material, high hardness (Rockwell 52), never rust, stable mechanical size and reliable.