H1 has a high definition OLED display, the compact size and long battery life offers wire factories the outstanding mobility in in-line diameter inspection. It allows wire factory QC management very simple and friendly  inspection in-line with high accuracy as +/- 0.15µm of the diameter without averaging. H1 is using all static components inside, no moving parts offers exclusive maintenance free. It is the most ideally handheld wire production in-process quality control instrument.