● With Gauge block, it can be measured or corrected the accuracy of angle.
● Suitable to use on large tool maker vise with varied angle.
● Can be used to do many different accuracy of work.
● Material: YK30
● Harden: HRC56°-58°
● Parallelism is within 0.003mm.
● Squareness is within 0.005mm.
● Weight :1kg