Product dimensions : 239 x 18 x 83 mm (LxWxD) Application : For all work with electrostatically endangered components. For outside, inside and depth measurements. Display : Dial, diameter 35 mm. Extra : Measurements in ESD protection zones and at ESD workstations. Extra : Impact resistant dial can be recalibrated to zero. Material : Surface resistance 10? – 10? ohms. Material : Calliper made of ESD-safe material. Non-metallic high-tech material with 60% fibre-glass content. IEC 61340-5-1.