Avery 6402 Hardeness Tester

[Marc Zabroski]

Hi,

Does anyone have one of these? I've just acquired one, lovely piece of engineering built in 1969.

It's my first tester so I've never had to calibrate before, it all seems to be working ok after a bit of fiddling about, but the readings I'm getting are about 10 hrc above what I'm expecting. There was no testing blocks supplied, but I can't figure out how to calibrate the machine even once a known hardness material is tested. Any help/insights would be appreciated.

Many thanks,

Marc

 

[000Robert]

Hi,

Does anyone have one of these? I've just acquired one, lovely piece of engineering built in 1969.

It's my first tester so I've never had to calibrate before, it all seems to be working ok after a bit of fiddling about, but the readings I'm getting are about 10 hrc above what I'm expecting. There was no testing blocks supplied, but I can't figure out how to calibrate the machine even once a known hardness material is tested. Any help/insights would be appreciated.

Many thanks,

Marc

I am not qualified to answer your question. But maybe using some hardness testing files could at least get you close until you figure out how to calibrate your machine.

 

[Twindog]

Do you have the manual? If not, you can get one here:
ma875c