Eleven solid brass set-up bars for setting bit or blade heights. Helps minimise calculation errors. Bars can be stacked if needed to achieve sizes larger than 19mm (3/4"). For hands-free operation, bar can be set on surface and bit or blade raised to match. Dimensions are laser-etched into the brass and screen-printed onto the durable, moulded plastic case. Foam insert protects bars. Use the bars to check dados and rabbets, set up jigs and fixtures and more. Accurate to +/- 0.005". Sizes range from 3 - 19mm (1/8 - 3/4"). Bar length approximately 64mm (2-1/2").