Caliper & Height Gage Checker from INSIZE INSIZE's Caliper Checker is a quick, easy and extremely accurate reference to use when confirming Caliper and Height Gage accuracies. Each comes with a certificate of calibration and a wood case. Save time and money by calibrating your own measuring tools. Caliper / Height Gage Checker features include... Horizontal and vertical use Used for the calibration of height gages and calipers Accuracy: ±.0002" Range of Inside Measurements... 1", 2", 3", 4", 5", 6", 7", 8", 9", 10", 11", 12" Range of Outside Measurements... 1", 2", 3", 4", 5", 6", 7", 8", 9", 10", 11", 12" Range of Height Measurements... 1", 2", 3", 4", 5", 6", 7", 8", 9", 10", 11", 12", 13-1/2" Note: Larger size and metric versions available on special order