Information Required When Ordering
Air Rings for Measurement of Outside Diameters
- Size and tolerance (including nominal) of diameter to be measured.
- Type of system and required amplification, magnification or scale, tooling is to be used on. (Federal D-2500, Sheffield 10-M full 15” column, Moore 814 H .0014/. 000020 scale, etc.).
- Required configuration of air ring (Thru [center jet], close to shoulder, or super close to shoulder). If super close to shoulder, specify required distance from shoulder. Note: length of lands and/or distance from shoulder may determine jet size.
- Number of jets: 2 jet – roundness, straightness; 3 jet – cloverleaf or lobing condition; 6 jet – average diameter.
- Clearance required – min., standard, max.
- Accessories – handles, hose fittings, adapters, etc.
Standard Jet Sizes
Universal, Western, Edmunds, Moore, Standard, Gar, Pratt & Whitney Style Air Probes
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Size Range
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Standard Jet Size
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.060 – .090
.090 – .125
.125 – .300
.300 – 5.000 -
.018
.025
.032
.042
Federal Style Air Probes Model
Standard Jet Size
D-2500 thru D-8000 – .050
EAG-31XXX thru EAG-32XXX – .050
D-10,000 thru D-32,000 – .025
EAG-33XXX thru EAG-XXX – .025
Sheffield Style Air Probes
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Size Range
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Standard Jet Size
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.125 – .300
.300 – 5.000 -
.047-3/4 Amplification
.078 Full Amplification
Federal Style Air Probes Model
Probes for Sheffield Column Comparators
Jet Sizes – Capabilities – Technical Information Jet Size Amplification
.078 Full – All Amplifications
.062 Full – 10,000:1 and Lower
.047 3/4
.032 1/2
.025 3/8
.018 1/4
.013 Based on Application
Note: Amplifications listed are standard for corresponding jet sizes. However, all amplifications are obtainable with any jet size. Call for technical assistance.
O.D. Air Ring Quote/Order Request Form
**Please note pricing under the pricing tab at the top of this page.