# Fixture Mastering (Gauge Repeatability & Reproducibility) screen

This screen is used to set the calibration value and the gain factor. The calibration value is the deflection between the Master Value and the Current Reading. On the launch of the screen, the reading for all the parameters is displayed in the respective textboxes. You may set the calibration value by clicking on the Start button or using the hardware switch (i.e. foot switch or hand switch). After setting of the calibration value, the Gain Factor can be set using the up and down switch. You may set the Gain Factor and then store it using the Start button or the hardware switch. You may click the Start button again to launch the Measurement Screen for capturing the Gauge Repeatability & Reproducibility readings.