Mitutoyo 167-145 5" Measuring Standard For zero adjustment of outside micrometers. Flatness: within 0.3m. Parallelism: within 2m. GBP 23.99 1
Mitutoyo 177-299 Setting Ring 5" Designed for quick zero adjustment of bore gauges, Holtests and inside micrometers. Cera Rings (Ceramic ring gauges) are also available. GBP 899.99 1
