Cheers for the info,
I have checked some of these scales (for example mesuering a 8" nominal over the full 9.5" travel) and they are more than good enough for what we reguire, In fact, I don't have anything that is as repatable as these to check them against so I ended up with the sacles on the workbench and bolting the read head on the 8" to a 14" and plugging them both into the readout to see if they both moved the same amount!
Anyway,
Regarding the 'over-travel allowance', is this allowance published anywhere?
I have not been able to find it in the suppliers catalogue and can't find it on the acu-rite web site either.
I ask as I need a 37" (actuall bed movment) scale for my mill,
Standard thinking would tell me the next size up which is a 40" but it that turns out to be 45" (say) then I will end up with 4" of fragile scale sticking out each side of the mill waiting to be knocked into,
What I am trying to say is what is the shotest 'nominal' length scale that will give me 37" travel?
The mill bed has stops on each end so overtravel allowance is not really needed providing I set the scale up properly (I presume
)