Type Description

Gage Tolerance Calculator

Use this utility to calculate the suggested Gage Tolerance and Go / No-Go gage dimensions

Tech Articles - Threads

Thread Measuring Wires per ASME B89.1.17

The use of thread measuring wires enables an accurate measurement of the simple pitch diameter of an external thread.

Tech Articles - Cylindrical

Black Guard Gages Sets & Pin / Plug Gages

Black Guard Gages prevent rust while providing a visual wear indicator.

Tech Articles - Cylindrical

Gage Tolerance Selection

How do you decide which cylindrical gage tolerance to use to inspect your product?

Tech Articles - Threads

Thread Pitch Conversion

Approximate conversions for Unified Inch, Threads per Inch to Metric Pitch


60° Thread Pre-Plate PD Calculator

Simply state the After Plating Pitch Diameter and your Min and Max plating thickness per surface. This tool will calculate the suggested before plating pitch diameter.

Published Articles

Depth Measurement - Quality Magazine

Is the hole too deep, not deep enough or just right?
As seen in Quality Magazine, January 2016

Tech Articles - Threads

Setting Adjustable Thread Ring Gages

Instructions to inspect, reset and calibrate adjustable thread ring gages with a truncated setting plug.

Tech Articles - Cylindrical

Reversible Plug Gage Assembly Components

Components of a typical Go / No-Go Plug Gage Assembly

Tech Articles - Threads

NPT and NPTF Thread Gages

NPT and NPTF Gage Basic User Guide


Cylindrical Gage Tolerance Chart ASME B89.1.5

Class XX, X, Y, Z and ZZ - Gage Tolerances

Published Articles

Thread Classes and Setting Plug Gages - Quality Magazine

Understanding the Alphabet Soup of thread classes.
As seen in Quality Magazine, October 2019.

Published Articles

Depth Measurement Challenges - Quality Magazine

Let’s look at some of the part and gage features that may impede accurate depth measurement.
As seen in Quality Magazine, October 2017.

Published Articles

Internal Part Thread Inspection - Quality Magazine

Using Fixed Limit Thread Gages to inspect internal threads.
As seen in Quality Magazine, August 2016

Gage Cleaning

Cleaning Steel Plug and Ring Gages

With the current pandemic of the Coronavirus (COVID-19), we have received a number of questions concerning the best ways to clean hand held gages.

Published Articles

Gages for Screw Thread Inserts (STI) - Quality Magazine

Gages for Screw Thread Inserts.
As seen in Quality Magazine, November 2019


Thread Tolerance and Allowance Distribution

Tap vs. Gage / Product

Published Articles

Adjustable Thread Ring Gages - Quality Magazine

Functional External Product Thread Inspection
Ass seen in Quality Magazine April 2017

Published Articles

NPT Taper Pipe Thread Inspection

This article, published in the March 2023 Quality Magazine, highlights some of the key points of the NPT product threads and how to inspect them using NPT fixed limit gages.

Published Articles

Cylindrical Ring Gages: One Ring To Rule Them All - Quality Magazine

One Ring to Rule Them All

Published Articles

How Do Tap Limits Affect Gage Selection? - Quality Magazine

Taps vs. Thread Plug Gages