Caldervale Machine Tool Engineers offer laser calibration and inspection of your machine tools. Including Linear, Straightness and Flatness checks. Linear measurement accuracy is an assured ±0.5 ppm thanks to a precision stabilised laser source and accurate environmental compensation. Readings can be taken at up to 50 kHz, with a maximum linear measurement speed of 4 m/s and a linear resolution of 1 nm, even at maximum speed. All measurement options (not just linear) are based on interferometric measurements, giving confidence in the accuracy of the data recorded.