Marquise rectangle: 0.02 - 3.0. A 7-arm unfolding diamond and stone size gauge. Each arm has size guides. Round: 0.01 - 6.0. Size ranges for each shape (ct).
Diamond Stone Size Gauge Metal Steel Plate Measuring Tool Size Guide 17 Sizes
DIAMOND STONE MEASURING GAUGE CARAT SIZER 0.01 to 4.0cts Jewellers - TG37
Diamond gauge Bead gauge 6 or 8 arms Fan bead knitting assembly gauge
ALUMINUM FOLDING FAN SHAPE JEWELRY DIAMOND PEARL GEMSTONE MEASURING TOOL
Diamond Stone Pearl Size Gauge Plastic Measuring Tool Size Guides Carat 37 Sizes
6 Folding Fan Shape Architects Scale Ruler For Graphics Multi Ratio Scale