when an inch isn't

A quick way to get a rough idea of the problem

Jog your machine to one side

Using a tape measure from your spindle/head/whatever put a block a known distance near the end of your travel.

Tell the machine to go that location.

If it way overshoots or undershoots you have a "steps per inch" problem. Change your steps accordingly. 1.016*24in = 24.38in ...... This would be very noticable with the above method.

If it's almost spot on. E.g. 24.016 Then it's probably a backlash or squaring issue. Could also be a gearing issue if your are using a rack and pinion with that low of a step count.

The trouble comes when one assumes km instead of miles or the other way round, ask NASA about that one.
From what I’ve heard congress in the US actually officially adopted the metric system in the mid 70’s, could of been ‘76 which would make sense as to why it was ignored.
To me consistent units of tens makes more sense than 12 inches to a foot, 3 feet to a yard, 22 yards to a chain, this where my knowledge of it stops apart from 1.6km to a mile.
At least a smidge, just a bit and poofteenth (this maybe just a term to my local), “about that much” & “you can drive a truck through it” are easily understood no matter your base unit. There’s a few others but not entirely in line with “the code of conduct”

I only measure in bannanas

smc.collins wrote:

I only measure in bannanas

That is most wise

OP ?
Crickets...

Crickets ? A measure of lack of response ?