Image Image Image Image Image Image Image Image Image

Caliper Log

Caliper Log

The three arm caliper probe provides a single continuous log of borehole diameter as recorded by three mechanically coupled arms in contact with the borehole wall. The caliper is a useful first log to determine the borehole conditions before running more costly probes or those containing radioactive sources. Once opened, the spring-loaded arms respond to borehole diameter variations as the probe is raised up the borehole.