Hi all. Thanks for your quick and erudite comments/suggestions. Triple-checking with just the machine (no data logger) has confirmed that it is a TS p...

Hi Moe. Thanks for the reply. Do you mean the software running on the laptop? I wondered that, but when I was doing my testing I noted that the Nikon ...

Hi all. Just to report back. After a day of annoyances (related to misbehaving data collecting software) it turns out your suggestions re the local sc...

Thanks all for the responses. I have a few things to check now, which is exactly what I was after. I will post back with results, just in case others ...

Yup. You are right. Wish I could edit, as wrote number wrong...damn tablet.First point I am shooting from has a point scale of 0.99965861. The point I...

Hello Bill93 and kjpls. Your suggestions have raised the possibility of local scale error. I am in UTM (s) 55 and, according to a websitey-thing for G...

Wow! What a run of replies. What a bunch of champs. You've all given me much to think on, but I will try to answer what I can now. Brad: I am based i...

Sorry RFC, stupid mistake. It is all metric and I should not have put the mm in there. 0.030 is 30mm. 0.050 is 50mm. 0.020-0.30 should read 0.20-0.030...