ITEM NAME:100*70mm Centering Square Gaging Center Gauge Round Bar Marking Center Finder 100*70mm Center Marking gauge / Center finding Gauge / center finding / Marking Gauge 1. The body is made of high carbon steel, chrome plated, Laser laser engraving 2. All measuring surfaces are ground 3. Accurately measure angles. 4.Product Size: 96mm * 150mm / 3.78inch * 5.9inch 1 * Centering Square Gauge.Centering Square 100 70mm Gaging Center Gauge Round Bar Marking Center Finder. 100 70mm Center Marking gauge / Center finding Gauge / center finding / Marking Gauge. Also note that monitor settings may vary from computer to computer and may distort actual colors.