A year ago I wrote about the value of buying setting plugs along with adjustable thread ring gages, particularly special thread rings. One point I made was that setting plugs should be used for the resetting of adjustable thread rings in accordance with the standard. Taking measurements of them was not accurate enough.
The problem starts with buyers of special rings who do not wish to pay for proper setting plugs. When it’s time for calibration, the hunt begins for someone who has plugs and of course, it’s unlikely they will be found because calibration laboratories would go broke keeping special setting plugs on hand in most cases. Some laboratories are ready to cash in on this situation by offering to “measure” special adjustable thread ring gages so the technician won’t have to buy the right thing. And, wow, the cost will be a lot cheaper than buying setting plugs.
Quality Magazine’s publisher, Tom Williams, brought up the subject of metrication in the September issue-he wondered why the United States was not metric yet. This column is about dimensions of all kinds so I couldn’t let Tom’s questions remain unanswered. As Quality’s unofficial troublemaker, I offer the following.
There are a number of rituals followed in the quality field that drive gage makers crazy. The first one involves gages that are rejecting parts. The ritual: reject the gages. Another one involves gages that appear to wear out too quickly. The ritual: reject the gages.
Should You Buy Masters for Your Thread Ring Gages? Gage users who have had bad experiences with rings that have not been set properly or who are just trying to keep their gage costs down, often ask "Should I buy masters for my thread ring gages?"