Gagemaker also makes thread inspection gauges that test internal threads with diameters ranging from 1.5 to 24 inches. The gauges are adjustable within a size range and measure different pitch threads with interchangeable thread rolls. Indicators have a travel of 0.5 inch and a resolution of 0.0005 inch, with higher resolutions possible. Sets of thread rolls are not included. The thread rollers and the software are offered separately.