Air Plug, Air Ring and Air Caliper Gauges
Air gauges are relatively low-cost, simple and easy to use.
They are maintenance free and easy to set up to attain high accuracy measurement
in a shop floor environment. Replacement gauges are substantially cheaper
than alternative contact gauging methods and all air gauges come with the
full back-up and resources of Coventry Gauge.
Air Gauge Elements
and Setting Masters
Coventry Gauge Air Plug Gauges, Air Ring Gauges and Calipers are produced
in steel, hard chrome and sprayed carbide. They link to electronic instruments
and control via our CV5000 converter and benefit from the following features:
• High resolution
• High repeatability
• Non contact
• Static or dynamic measurement
• Multi parameter measurement
• 3mm to 150mm diameter
• Compatible with instruments from
other sources
• Air plugs for internal measurement
• Air rings and Calipers for external measurement
• In-cycle, in process and post-process
Air Plug Gauges
Options:
• Through bore
• Blind bore
• Pilot entry groove
• 3 measuring jets
• Specials
• Steel, carbide, hardchrome, ceramic
• Handle and hose
• Connector
Masters:
High/low or nominal masters are required depending on read-out system, and
should always be ordered with new air gauge elements.
Capabilities:
Depending on system specification, air gauges can resolve and repeat to sub-micron
levels, and are capable of very high reproduceabilities even in shop-floor
environments.
Full details of your application should be submitted to enable selection of
the optimum read-out.

Small Air Plugs ØA = 3mm to 8mm

Small Air Plugs ØA = 8mm to 150mm
Jet diameter for Coventry Gauge Systems is 1.98mm or 1.16mm, depending on gauge diameter and jet position relative to front face. Other jet sizes are provided for other systems.

Adaptor for Air Plugs ØA = 8mm to 150mm
| Air Plug Gauges | ||||||||||||
| To Gauge ØA |
L1 | L2 |
ØC | ØD | L3 | L4 | L5 | L6 | L7 | |||
| From | To | Through | Blind | Through | Blind | |||||||
| 3.0 | 8 | 35 | 21.4 | 15.8 | 2.4 | 16 | 12.8 | 16 | 63 | 16 | 16 | 11 |
| 8.0 | 63.5 | 44.5 | 25.4 | 19.0 | 2.4 | 16 | 12.8 | 16 | 6.3 | 16 | 16 | 11 |
| 63.5 | 150 | 44.5 | 25.4 | 19.0 | 2.4 | 16 | 12.8 | 16 | 6.3 | 16 | 16 | 11 |