I too have the 1900, and agree the instructions are sparse to say the least!

Many thanks Andy, it arrived with the hs like that ! And on winding it feels as though it's full of sand.. gritty and course. I will attempt to sort the hs, but my experience with h/springs is limited. I have purchased Mark's course but haven't done it as yet due to other things! (Rebuilt wife's Santa Fe's diesel engine) so Marks course is next thanks again for the information.

See the answer above, neither one  two can read a coaxial escapement, and nothing can be done so they do. Of course, even in current production, not all Omega have that.

None of these two can read a coaxial escapement, and nothing can be done so they do. 

Can someone show the settings and readings for the 1000 and 1900 measuring a coaxial escapement? I would be interested as I am considering purchasing one of these. If the 1000/1900 does not give enough detail to regulate a coaxial I will get one that can as I have a number of Omegas in need of servicing. All information is gratefully received.