I mean an internal backup, like a button cell or whatever.

Love starting a large construction project and seeing it through to as-builts. Enjoy the interfacing with the trades and helping them with the layout ...

I liked Topcon for years due to local dealer support, switched to Trimble when he did. Spent 5 years in hard rock tunnels, drill & blast, TBMs etc...

Thanks everyone.

See if your local dealer can hook you up with a used robot. I'll bet it can be done for 5-6k. Take a small loan or lease, skip the endless walking bac...

My first job was as a rear chainman with a medium size land surveyor in 1971. My chief did all his calcs in the car by hand with a Illinois Tool trig ...

Thought it looked familiar, was out there in May visiting with some Dragados buddies.

Bought a Trimble R8 GPS used from Canada a few years back, no problems.

Where is the elevated railway?

Not attached. Use that photo in the certificate.

I still have a 3 prism & 9 prism setup in the garage somewhere. Cannibalized the glass off most of them over the years, We used them years ago on ...

In New York, the MTA requires the use of 0.5" instruments for tunneling projects.