Well, I bought an Acme thread gage from Starrett through MSC.
Unfortunately, it's got a manufacturing defect. Milling of the short side of the 29 degree angle checker is incomplete, leaving a burr that makes this part of the gage useless.
Here is the burr in silhouette:

Here is an angle view to show the incomplete milling of the short side of the angle:

Of course, I could gently file off the burr myself, but I didn't pay the Starrett premium price so I could finish making the tool myself. Besides, that is a critical part of the gage, and I would assume that Starrett's production machinery is more accurate than I am...
Edit: I've already fired off an email to Starrett; we'll see what they do.
Unfortunately, it's got a manufacturing defect. Milling of the short side of the 29 degree angle checker is incomplete, leaving a burr that makes this part of the gage useless.
Here is the burr in silhouette:
Here is an angle view to show the incomplete milling of the short side of the angle:
Of course, I could gently file off the burr myself, but I didn't pay the Starrett premium price so I could finish making the tool myself. Besides, that is a critical part of the gage, and I would assume that Starrett's production machinery is more accurate than I am...

Edit: I've already fired off an email to Starrett; we'll see what they do.
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