Hammond & Co. ROK-IT Gauge Animation, for measuring bores/holes

An animation to show how a ROK-IT Gauge measures bores internally on a workpiece.
The ROK-IT Gauge is a superior alternative to conventional plug gauges. It is available from 6mm to 600mm diameter (0.236in to 24ins).
There is no jamming or swelling within the bore and an exceptional gauge life. Instantly determine workpiece bores are within tolerance.
ROK-IT gauges are truly spherical - part of a ball. They can be presented to the bore at any angle without struggling for alignment, and rocked over centre to check size.
When using a ROK-IT, there is no discernible friction, so you really can gauge 'size for size' - unlike conventional gauges where excessive friction can use a big chunk of the workpiece tolerance just to push the GO end into the bore. In other words, a conventional plug gauge can reject good components. ROK-IT doesn't.