Hamilton Model 22 Rate Card - performance data - anyone?

[KipW]

I have been searching for some time, for 'evidence' in the form of a rate card (or anything similar) that shows what an M22 is typically capable of in terms of rate and accuracy. NOTHING!

Whitney provided this kind of info for the M21 in his book, and it seems the military would have such info, not to mention yachters, sailors, and civilians over the late several decades...and yet?

The range/parameters and performance standards are public knowledge and not in question, but the specifics of particular watches - not so much. Whitney and others have stated that the M22 is capable of outperforming traditional Marine Chronometers and matching the M21. Where's the proof?

Please, if you've got it show it! Thanks!

 

[Jim Haney]

Have you tried the NAWCC Library. Go up to the Blue Bar at the top and click on RESEARCH and a drop down will lead to requesting the Information.

 

[Ned L]

I have a couple of 40 year old hand written "logs" (little notebooks with hand written "+" & "-" day to day time notes from CHU Canada) from a couple of 22's that I have/had, but those 22's hadn't been serviced in probably a couple of decades.

 

[thesnark17]

Can you show them? I think that's what the OP wants to see - the actual performance of a typical chronometer in service (or at least in testing).

 

[Ned L]

I will post some pages when I get back home.

 

[Ned L]

Here are two pages for Hamilton 22 #1013. Again, I have no idea how long it had been since this one was serviced.
These are from the end of April and early May 1978

 

[RandomMike]

I have been searching for some time, for 'evidence' in the form of a rate card (or anything similar) that shows what an M22 is typically capable of in terms of rate and accuracy. NOTHING!

Whitney provided this kind of info for the M21 in his book, and it seems the military would have such info, not to mention yachters, sailors, and civilians over the late several decades...and yet?

The range/parameters and performance standards are public knowledge and not in question, but the specifics of particular watches - not so much. Whitney and others have stated that the M22 is capable of outperforming traditional Marine Chronometers and matching the M21. Where's the proof?

Please, if you've got it show it! Thanks!

No real answer but anecdote: I did this for several days on an M21 around 1960, comparing it to WWV. As I remember it was good to about 2.5 seconds over almost a week with a daily variance of maybe less than a second. No temperature or atmospheric pressure listings that I remember, ha ha.

 

[burt]

I have been searching for some time, for 'evidence' in the form of a rate card (or anything similar) that shows what an M22 is typically capable of in terms of rate and accuracy. NOTHING!

Whitney provided this kind of info for the M21 in his book, and it seems the military would have such info, not to mention yachters, sailors, and civilians over the late several decades...and yet?

The range/parameters and performance standards are public knowledge and not in question, but the specifics of particular watches - not so much. Whitney and others have stated that the M22 is capable of outperforming traditional Marine Chronometers and matching the M21. Where's the proof?

Please, if you've got it show it! Thanks!

Did you view page 208 in Whitney? In my book that is what your looking for a "typical rate card for a Model 22".