Borehole Diameter Micrometer
Our newly designed micrometer is a mechanical device used to measure the diameter of a roof bolt hole along its length. The standard unit has a measurement range of 30 to 60mm and can be inserted up to a depth of 3 metres from the borehole opening. With a smooth pull-to-measure mechanism, measuring a borehole diameter has never been easier.
It features three expandable arms for precise diameter measurement, is easy to use, and is robust for heavy duty work.
Data Sheet: Borehole Micrometer