The multiple-echo device is designed to provide accurate readings of metal thickness in corrosive applications including mining and quarrying.

Coltraco said Portagauge 4 offers an accuracy of ±0.1mm and is able to ignore surface coatings such as paint. It is easy to calibrate and doesn’t require zeroing. The large colour LCD numeric digital display and the soft moulded rubber casing makes Portagauge 4 robust and user friendly.