Roughness Comparison Model E125 (Special Offer) British Elcometer Surface Roughness Comparison Model * Suitable for sandblasting and shot peening * Metric units * Comply with ISO8503 standard. The Elcometer 125 surface roughness comparator evaluates the surface roughness by contacting the surface and manual observation. There are fine sand type and shot peening type. Metric units only. Elcometer125 surface roughness comparator Fine sand Shot peening Surface selection 25, 60, 100, 150μm 25, 40, 70, 100μm Part Number E125 ---- 1 E125 ---- 2 Water Flosser With Big Water Tank Teeth flusher,Dental flusher,Oral irrigator,Water flosser,Teeth cleaning device Shenzhen Shengkang Electronic Technology Co.,Ltd , https://www.shk-beauty.com