Metal rule depth gauge helps set the height of router bits and saw blades with greater accuracy. Features: Self-standing for setting cutter depth on router tables and low profile for backfence adjustment Horizontal and vertical measuring For hand routers, router tables and table saws With 2-3/8″ wide aperture, accurate to 1/32″ Measurement range is 3-1/8″ Steel rule has dual metric and imperial scale With unique cam lever lockHorizontal and vertical measuring