This is for you old instrument guys out there.
I recently came into possession of a Tokyo Optical plane table alidade, Model #10056. It is a fairly small device - the foot is only 10" long. It is in very good condition, with just a bit of fuzz in the optics, but all controls work and all level vials are intact. My wife took a look at it and called it 'cute', and I have to agree it certainly is - for an alidade.
There is a bit of slop in the head - the telescope won't stay parallel with the foot. I think I know where the problem is - there are a set of screws at the top of the pedestal that probably need tightening. However, these screws are inaccessible while the alidade is fully assemlbed.
I could go at it with a set of screwdrivers to get it apart, but I want to do this smart/right. Anybody out there ever used one of these alidades before? Any chance anyone has a set of instructions? A Google/Bing search reveals nothing.
As always, thanks in advance!
Brian
Yes, cute! Would you do a contour plat of a small lot, and have somebody film it, so that we all could see it done?
I am thinking of doing that with primitve traversing methods. So that posterity will understand.
N
"Would you do a contour plat of a small lot, and have somebody film it, so that we all could see it done?"
Sure. As soon as I get done with Low's 'Plane Table Mapping'.
It's a Topcon and a very early one (hey, it's not yellow!) and looks to be in great shape.
It's a very simple concept and any instrument repair operation should be able to set it in order for you.
Cute!
Howdy,
I had a chuckle when I saw this caption for the planetable in the surveying instrument case at the British National Maritime Museum in Greenwich: https://picasaweb.google.com/donNGS/GeodesyRelated#5237444473268067138
It is always good to remember to use the appropriate tool for the task.
Cheers,
DMM
Isn't that the same color paint they used on the zeros?
:coffee:
Well, looking at it side-by-side with my T-16 it looks like Wild and Tokyo Optical sourced their paint from the same supplier. Perhaps a paint manufacturer in Berlin... 😉