I'm going through the user available instrument calibration routines on my total station. I'm noticing the slightest amount of what feels like tangent screw backlash. I've looked for a thread I read long ago on the subject, but I think it was related to dual plate theodolites, so it may not even be relevant, so....
Is backlash something to be considered in a "modern" total station? When doing sets, is it advisable to always approach the final dialing in from the same direction (say clockwise, or "turning the screw in", as I was taught for mills or lathes with digital readouts?). It seems to be a few seconds worth of "slop". Are there internal adjustments a dealer can perform to minimize it or eliminate it? Time for an overhaul, or just normal?
rfc, might depend on make, model, and age. if you are noticing a couple seconds difference from one habit to another, establish a solution and stick with it. on tangent screws, yes, tighten/clockwise should be the last direction turned
Theodolites, and guitars, you always "Tune Up", not "Down".
Some modern theodolites, use another mechanism, clutches, and they are a bit different. But, if it has a spring, pushing against a tangent screw, Mr Moe Shetty is right.
N
Nate The Surveyor, post: 363030, member: 291 wrote: Theodolites, and guitars, you always "Tune Up", not "Down".
Very nicely put, Nate
Its time to send it in for a checkup. I was told it is like a brake on a disc and the pad is not making contact square.