Feature

●Check screw diameters from 1mm to 20mm
●Check screw thread pitch from 0.8 to 6mm
●230mm ruler (with 5mm intervals). 7cm ruler (with 1mm intervals)
●7cm ruler (with 1mm intervals)
●Sturdy lightweight plastic


Description

Check screw diameters from 1mm to 20mm. Check screw thread pitch from 0.8 to 6mm. 230mm ruler (with 5mm intervals). 7cm ruler (with 1mm intervals). Resists water, oil and grease. Sturdy lightweight plastic.