Mitutoyo 167-147 7" Measuring Standard For zero adjustment of outside micrometers. Flatness: within 0.3m. Parallelism: within 2m. GBP 29.99 1
Mitutoyo 177-303 Setting Ring 7" Designed for quick zero adjustment of bore gauges, Holtests and inside micrometers. Cera Rings (Ceramic ring gauges) are also available. GBP 1339.99 1
