From: ard at p850ug1.demon.co.uk
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1) You have ot dispmantle the meter to change the battery, and it's
assembeled with self-tapping screws going into the plastic case. I don't
know how many insertions they will stand.
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Ahh
Something I know that Tony doesn't.
I work with a lot of things that are wood and
have screws that, if screwed in and out too many times,
will end up with holes that don't hold the screws any more.
Similar problem to the plastic and self tapping screws.
I was shown a trick by an old wood worker years ago
to keep from cutting new threads.
You place the screw into the hole and while holding light
pressure, rotate it backwards with the screw driver.
At one point in rotation, it will kind of pop down. I don't
know how else to describe this but it is a feel thing.
Then, screw the screw in. It will now follow the old threads.
On the plastic with thread cutting screws, use very light
touch and carefully screw in. It will bind if not aligned well.
Of course, if the hole has already been abused many times,
this doesn't work as well.
Dwight