Precision measurement with the base holder provides stability and accuracy for all digital dial indicators. A robust adjustable articulating arm and a switchable permanent base offer flexible positioning and quick setup for alignment tasks. Suitable for machine manufacturing, auto repair, and home use, enabling detailed size measurement and calibration. Designed for engineers, manufacturers, and DIY enthusiasts who require precise measurements for their projects. Compatibility and performance: works with standard digital dial indicators and mounting patterns to integrate with your existing setup and maintain measurement precision. Use scenarios - Machine shop: mount a digital dial indicator on a fixture to check spindle runout or to calibrate workpieces with repeatable positioning. - Auto repair: verify alignment of components during installation or maintenance tasks such as brake rotor runout checks. - Home workshop: fixture small parts for accurate dimension checks and calibrate jigs and fixtures for DIY projects.