For sale is a Shardlow Micrometers Ltd. 0 to 0.5" Micrometer Depth Gauge. Barrell graduations read to 0.0005". 2-1/2" X 5/8" Gauge surface. This is a used depth gauge that operates smoothly and "zero's" to within one graduation (0.0005") of the zero line. Ships in a USPS small flat rate box.