On Sat, 4 Oct 2003, james olson wrote:
> I'm hoping Tim Hughes can weigh in on this if he is still on-list. I have
> an old Weston Ranger 9 light meter that used mercury 625 batteries that were
> 1.35 volts. I'd like to conver it to the silver oxide 357 cells our OM's
> use.
Tim has put together an article on the subject of converting from 625's to
357's. You can find a pdf of his article here:
http://olympus.dementia.org/Hardware/PDFs/OM1DiodeVer2_1C.pdf
> Other than spending $45 for two MR-9's, is there any way I can add a
> resistor in-line somewhere in the meter to do the same job?
You could also try building your own MR-9 as described here:
http://olympus.dementia.org/Hardware/PDFs/batt-adapt-US.pdf
-mark
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