Silverline Composite Digital Vernier Caliper 150mm

Amazon

Lightweight, strong carbon fibre construction Large, clear LCD display Takes external & internal measurements Measures from 0.1mm - 150mm Metric or imperial calibration

Electrical World

Carbon fibre composite digital vernier caliper. Resolution 0 - 150 x 0.1mm / 0 - 6 x 0.01". 2-way measurement, internal and external.