05-07-2023, 08:33 AM
Interesting that it is exactly 1.3" - I wasn't aware of that - but not surprised it wasn't based on mm.
In Imperial units (Christian units, as my old physics teacher used to call them) 1.3" would be 1 1/4" + 1/20" - so not one of the usual sequence of sizes?
In Imperial units (Christian units, as my old physics teacher used to call them) 1.3" would be 1 1/4" + 1/20" - so not one of the usual sequence of sizes?