Air Gages

About

Air gaging is the fastest, most repeatable way to measure inside diameters, outside diameters, and geometric form on the shop floor. Instead of touching the part, an air gage reads a dimension from the back pressure or flow of air escaping between precision jets and the workpiece — so it is non-contact, self-cleaning, and accurate to millionths of an inch, with typical magnification from 1,000:1 to 10,000:1. Because it measures from the mean surface rather than from roughness peaks, air gaging gives a truer reading than contact methods, at production speed. WESTport has manufactured, sourced, and calibrated air gaging systems since 1989 in a climate-controlled, ISO/IEC 17025 accredited facility. The WESTport air gaging line This collection covers the complete air gaging system — from a single replacement plug to a fully configured multi-channel setup. Every item is compatible with Mahr/Federal, Edmunds, Sheffield, GAR, Universal Gage, and Western Gage tooling, so you can expand or upgrade without rebuilding your gaging system. Air Plugs (internal diameter). Opposed air jets measure bore ID with sub-micron repeatability from 0.120″ to 6.010″. Standard through-hole, blind-hole, counterbore, deep-hole / long-reach, leaf-contact (for cast, knurled, or interrupted surfaces), and taper styles. Air Rings (external diameter). Jets set around the ring bore measure shaft and OD dimensions as the part passes through — faster and more repeatable than snaps for high-volume work. Standard fixed-size, adjustable, and split / flanged configurations. Air Snap Gages. A C-frame or fork that brings the jets to the part instead of the part to the gage — ideal for long shafts and large components. Fixed, adjustable, and blade-type groove-width models for OD, wall thickness, and groove checks. Air Spindles. Plug-style tooling built for long bores and automated, in-process gaging cells. Standard and long / extended-reach lengths. Digital Comparators & Amplifiers. Single- and multi-chan

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