010.150/0.3-4mm. Length: 6-1/4/160mm. Very useful tool for bearing work and for gageing slots. Made of quality tool steel and accurately tapered throughout entire length for quick and convenient measuring. 11mm (7/16″) wide by 160mm (6-1/4″) long. Can be used as a precision shim. One side graduated from. 150 in thousandths of an inch; the reverse side from 0.3mm to 4mm in one twentieth of a mm (0.05mm).