get a micrometer on it, and measure diameter in two directions and take average ~(compensates for ovality, to a degree), and then get an R1 reading over a long length, we can probably work out a rating from those measurements.
apologies about the dates of the regs - I know the 1970 metric edition had some of the aluminium tables deleted so only the large sizes remained, I assumed that what came before included the smaller sizes - clearly not.
get a micrometer on it, and measure diameter in two directions and take average ~(compensates for ovality, to a degree), and then get an R1 reading over a long length, we can probably work out a rating from those measurements.
apologies about the dates of the regs - I know the 1970 metric edition had some of the aluminium tables deleted so only the large sizes remained, I assumed that what came before included the smaller sizes - clearly not.
