Go gages provide a precision tool for production comparative gaging based on a fixed limit.  Go gages consist of a fixed limit gage with a gaging limit based on the plus or minus tolerances of the inspected part.  A go ring gage's dimensions are based on the maximum OD tolerance of the round bar or part being gaged. A go plug gage's dimensions are based on the minimum ID tolerance of the hole or part being gaged.  The go plug (ID) gage should be specified to a plus gage makers' tolerance from the minimum part tolerance.  The go ring (OD) gage should be specified to a minus gage makers' tolerance from the maximum part tolerance.


Products & Services
Ring Gages
Ring gages are used for go / no-go assessment compared to the specified dimensional tolerances or attributes of pins, shafts, or threaded studs.
Thread Gages
Thread gages are dimensional instruments for measuring and/or verifying thread size, pitch or other parameters.
Snap Gages
Snap gages are used in production settings where specific diametrical or thickness measurements must be repeated frequently with precision and accuracy.
Dimensional Gages and Instruments
Dimensional gages and instruments provide quantitative measurements of product or component dimensional and form attributes such as wall thickness, depth, height, length, inner diameter (ID), outer diameter (OD), taper or bore.
Masters and Setting Gages
Masters and setting gages provide dimensional standards for calibrating other gages.

Product Announcements
Pratt & Whitney Measurement Systems, Inc. - Pratt & Whitney LabMaster Universal...
With instrument uncertainty to 2 millionths of an inch (50 nanometers), the Pratt Whitney Labmaster (LMU) is suitable for virtually all internal and external measuring applications. The Pratt Whitney... (read more)
Pratt & Whitney Measurement Systems, Inc. - LabMicrometer® ID/OD for Long Length
If a large direct reading range is important to you, choose the Labmicrometer measuring system. Designed for gage calibration laboratories requiring precise internal and external measurements over... (read more)
Pratt & Whitney Measurement Systems, Inc. - LabMaster® Standard Gage Block Comparator
With instrument uncertainty to 2 millionths of an inch (50 nanometers), this comparator is suitable for OD applications such as gage blocks, ball bearings, optics, and film thickness. The Labmaster... (read more)
 

Topics of Interest

No-go or not-go gages provide a precision tool for production comparative gaging based on a fixed limit. No-go gages consist of a fixed limit gage with a gaging limit based on the minimum or maximum...

OVERVIEW Fixed gages embody the direct or reverse physical replica of the object dimension to be measured. The gage may represent the part dimension either in its nominal condition the master gages...

GO-NO GO GAGES The concept of Go-No Go gaging is so simple in its logic that it has been known to delight philosophers. For them, a Go-No Go situation is the very rare case where there are only two...

The taperlock gage is so-called because of the tapered shank, which locks into the tapered hole in the end of the handle. It is the time honored standard of the American Gage Design Committee, for...

Chapter G: G Gurney's Metal or Bronze G-? G Symbol for giga- (10 9), gas, or gravity. ? or ? See also gamma. G G-30 A registered trademark of Haynes International,...