Hello, I would like to buy a staff (2m) for my leica DNA03 digital level but untill now I found only nedo invar that cost 1500$ and leica similar costs 1800$.
Anything cheaper not invar can you suggest me?
The Leica GKNL4F is a 13' 3-section fiberglass rod that works well for most non-critical applications. Smaller and lighter than the GPCL2 invar rod, though not as accurate.
For lower order work, Leica has several staff options in aluminium and fiberglass. They range in price from $166 to $400.
@lurker Have you used one? I'm wondering why the expansion coefficient is half again as much as the 3 piece fiberglass version.
@john-putnam No i have not and I'm not smart enough to have a clue as to why there are differences in the expansion coefficient. I can only guess there are different formulations of fiberglass and that the 2 rods aren't made of the same formulations.