Brass Sliding Millimeter Gauge Tool Gem Bead Size 100mm This is a new brass sliding measuring gauge It has a smooth brushed finish and fine, crisply stamped numbers and lines Measures millimeters and inches Graduated in 1 mm and 1/16" increments Measures up to 100 mm and 4" Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.