Birdsall Tool and Gage Launches AirGages.com

The team at Birdsall Tool and Gage Company has launched a website dedicated to the description and professional uses for Air Gages in the manufacturing and engineering processes. Here is a sample excerpt from the website:

Air Gaging is a highly accurate method of checking tight tolerance features. Air Gaging can be used to check bores or shafts, where accuracy and repeatability are critical.

Air gages use air flow to measure size. The rate of air flow is proportional to the clearance. To set an air gage, the rate of air flow is measured using masters that are calibrated to the high and low of the part tolerance. In the past, air columns were used to tell if a part was good or bad. These are column instruments were essentially an air flow indicator. Pressurized air suspended a float in a transparent tube; this float moved up and down in the tube according to the flow of air. From the top of the tube, the air flowed through a hose and exhausted through the clearance between the gage device and the work piece. Read On.