Having got around after 2 years, to restacking the hifi, I needed a
wheeled platfom to stand it on. I went into my stock of castors and
found some nice 8mm threaded castors which seemed ideal. After buying
some 8mm threaded mounting plates from Toolstation, I attempted to mount
these and discovered that my 8mm castors were in fact 5/16 whitorth.
Fortunately in my tool collection I had some Whitworth taps and dies, so
i was able to retap the 8mm mounts to 5/16 Whitworth. Some where over
the years i have lost my thread gauge plate which would have been useful.
That's one benefit of being old. I started out with the then current tools
which included Imperial and AF, etc, so still have them. And added Metric
when it came along. Having the larger size BSW/BSF spanners, and AF, and
Metric means I've always got one which is a perfect fit to those plumbing
*Everybody lies, but it doesn't matter since nobody listens*
Dave Plowman email@example.com London SW
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