A California company has developed a simple-to-use, magnet-fitted base with an internal digital depth gauge that you can use to quickly measure the depth of cut that you have selected together with the squareness and straightness of the blade. Any furniture maker who works with hand planes will quickly appreciate the function of this Check Gauge. At this modest cost, its value is very high.
Reads in decimal and fractional inches, and mm.
Resolution/Repeatability: 0.0005"; 1/128"; 0.01 mm
Dust and Humidity Proof
Battery: CR2032 (included)