Scribing Marking Gauge with Micro Adjustment Function,Carpenter's

The wheel marking and insertion jig allows you to mark straight lines on the wood surface with the utmost precision. It can also be used as an insertion depth gauge. The hardened alloy grinding wheel has a diameter of 12 mm and features 360° rotation for more consistent marking performance on softwood. Precision ground rod made of 304 stainless steel, with clear laser-etched graduations for easy orientation. The non-marring brass surface can slide along the edge of the wood for consistent marking. Metric reading with a measuring range of 12 cm in 1 mm increments. Allows for 0.2 mm increments by turning the knurled locknut.