SB9a Lathe plus numerous Machinist tools

[ShagDog]

That is a more modern/general term, but yes. ACME threads are a subset of trapezoidal. That tap is something most machinists would want to get hands on, so it makes your score even better.

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Thanks. I don't know anything about it's quality as there are no markings whatsoever on it.

 

[benmychree]

That is a more modern/general term, but yes. ACME threads are a subset of trapezoidal. That tap is something most machinists would want to get hands on, so it makes your score even better.

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metric countries use the term TRAPEZOIDIAL for the metric equivalent of the Acme thread, which is 29deg. included angle, whereas, the metric thread is 30 degree included angle.

 

[ShagDog]

In a previous post, I asked about what these pointed items were; but the photo did not make them very visible. I took another photo showing these things better. Please let me know if you can id them.

 

[benmychree]

In a previous post, I asked about what these pointed items were; but the photo did not make them very visible. I took another photo showing these things better. Please let me know if you can id them.

Nothing that I have seen before.

 

[pontiac428]

They look like they could be table stops or dogs/followers for mechanical motion control. You may not find a use for them without the machine they were made for.