Anyone have a HR-150A hardness tester?

[metric_taper]

I have this model. Purchased new in 1995 from Penn tool company. I use it at least once a week. It is darn accurate, and I trust it to give me repeatable numbers. I check it maybe once every 5 years against the calibration plates that came with it. It's always within tenths of them. I only use the C scale.
It's great when you have mystery steel, and want to verify if it needs to be annealed in the heat treat furnace.
I got it originally as I made some shafts for my skid loader that roller bearings run on. Oil hardening tool steel was used, and I wanted to check temper.
I used it this week as I purchased some HSS 90 degree point spotting drills from eBay. They should all be greater the Rc>65. But I found the smaller drills to be softer. I wrote the hardness on the label for each drill. The 3mm was Rc=51, the 8, 10, and 12mm drills were acceptable hardness.

 

[Jim F]

I have this model. Purchased new in 1995 from Penn tool company. I use it at least once a week. It is darn accurate, and I trust it to give me repeatable numbers. I check it maybe once every 5 years against the calibration plates that came with it. It's always within tenths of them. I only use the C scale.
It's great when you have mystery steel, and want to verify if it needs to be annealed in the heat treat furnace.
I got it originally as I made some shafts for my skid loader that roller bearings run on. Oil hardening tool steel was used, and I wanted to check temper.
I used it this week as I purchased some HSS 90 degree point spotting drills from eBay. They should all be greater the Rc>65. But I found the smaller drills to be softer. I wrote the hardness on the label for each drill. The 3mm was Rc=51, the 8, 10, and 12mm drills were acceptable hardness.

Is this a part for it ? I have 4.
It looks like #7 in the drawing in the back of the instruction book.

 

[Jim F]

This is what else I have.

 

[metric_taper]

Is this a part for it ? I have 4.
It looks like #7 in the drawing in the back of the instruction book.

I don't think that is for this tester. Simple set screw is used to change between the Rockwell C and B test points. Otherwise the wood box of accessories has different plattens, the V is the one in my machine now, but there is a small round, and large round, and then the calibration test plates.

 

[metric_taper]

This is what else I have.

Mine came with this same box of accessories. If you have this without the tester, someone is missing a needed set of components.

 

[Jim F]

I don't think that is for this tester. Simple set screw is used to change between the Rockwell C and B test points. Otherwise the wood box of accessories has different plattens, the V is the one in my machine now, but there is a small round, and large round, and then the calibration test plates.

It looks like it might go inside, at the bottom back.

 

[Jim F]

Mine came with this same box of accessories. If you have this without the tester, someone is missing a needed set of components.

Like I said, next time I am up there, I will look for the tester.

 

[metric_taper]

It looks like it might go inside, at the bottom back.

I have no idea what that would be for testing. I'll have to take a photo of the jack screw in mine, it has a plastic cover tube that expands as the jack is raised I assume to keep dust off the threads.

 

[Jim F]

I thought it might be this part.
From the back of the instruction pamphlet.

 

[metric_taper]

I uploaded a photo in the previous post, so this post should generate an email notification.