Hardness tester HELP

A

Adam Reese

Joined
Nov 4, 2010
Messages
400
Alright everyone, first the back story.

About 2 years or so ago, Augusta Tech was selling some surplus equitment and I bought this hardness tester for $200. I thought it was a pretty good deal, but didn't know anything about these things. Well after getting it home and looking it over and reading about it, I found out that it was missing the weight sets. The people at Augusta Tech didn't know anything else about it or where the weights were, so I put it in storage for a while and tried to find a weight set for it. I have still not found a weight set, but yesterday i bought a metal lathe, so I thought maybe I could machine a set.

The tester is a "Service Diamond Hardness Tester model 12A"

Here are my questions:
1. Does anyone have a manual for this thing?
2. Do all of the 150kg weight sets weigh the same thing?

If anyone would be so kind, if you have a similar hardness tester, could you weigh your 150kg weight and post the actual weight on here?
Here are some quick cell phone pics. Excuse the messy house...:)
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The dial looks foggy on this pic, but it isn't, thats just how it came out.
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Any help would be greatly appreciated.

-Adam
 
Best thing I can say is, make sure your wife doesn't see these photos- she'll never trust you alone in the house again.
(I'm always trying to turn our living room into a knife shop when mine is out of town)
 
I'm not sure that the flowers will make the tester happier and give better readings !
 
Adam Reese said:
HaHa, Yeah, she got home before I had time to move it. Needless to say she wasn't happy...:)

-Adam
Click to expand...

I do things like this all the time. If I could record all the comments it would make a great track to listen to and laugh hard.
 
2. Do all of the 150kg weight sets weigh the same thing?
Click to expand...

The weights need to weigh 150kg for C scale. Yes 150kg weights always weigh 150kg. :D

I have bought weights on ebay. These usually have 3 weights, 40, 60 & 50kg.
 
Thanks for the reply Don,

I was wondering if the weights were callibrated to a specific tester I wasn't sure if they represented 150kg's worth of weight or were in fact 150kg. I am just having a hard time trying to rap my head around there being 330 pounds of weight in the back of my tester. I can't see how there would be enough room for it. Are they made of something denser than steel, or am I missing something completely.

I am still kind of lost here. We are talking about kilograms right? 1kg equals 2.2 pounds, so it just seems to me that that much weight would bend the bar the weights hang on. I did read something about some kind of ratio, so I thought maybe that applied.


-Adam
 
Ok, I just read something on a machinist forum that said their 40 kg weighs 1600 grams, their 50kg weighs 2000 grams, and the 60kg weighs 1855. They said the 60kg should weigh more, but it is altered to account for the weight of the hanger and bar. Does this sound right?

Also, does anyone have a manual for this thing?

-Adam
 
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