Bet that's got someone's attention.;-)
I've had to get a new battery for the old Rover, and it's slightly taller. It's held in place by a pressed steel angle piece along the top, and two stays that hook in the body at the bottom, and have threads and wing nuts at the top. And one is now too short by about 1/2 in. The thread size is M5 - the car was made at a changeover time where some stuff is metric, some unified.
The obvious way would be to simply make a new one, but could I get galvanised rod of the correct size easily? My thought was to extend it if I could find a suitable length of internally threaded tube - I've got the correct taps and dies, but no lathe to drill an accurate hole through the centre of a 'blank' even if I had something suitable lying around.
I don't fancy using threaded rod - it would look cheap and nasty. But an extension of some sort near the bottom of the stay wouldn't show.
Just to explain matters, I sometimes 'show' the car at the SD1 club meets, and try to keep it as near 'correct' in this sort of thing as possible.