In article ,
David Lang wrote:
Hi Tony
There are 5/8" taps around - I used to have one!

People used them when washing away rocking horse droppings.

:-)

I know that connector sizes are not quite the same but, when looking
through my father in law's collection of tap washers, there were a
lot of 1/2" and 3/4", some 5/8" and two 9/16" ones.

There was also some sort of measuring implement that defeated the
Whipple Museum, and I mean to send to the National Maritime Museum
to see if they have a clue what it is. My father in law couldn't
remember.


Regards,
Nick Maclaren.