In a recent thread, someone suggested that if you had to do with used stuff, go with good used stuff. (Not exactly how it was put, but how I interpreted it). He mentioned looking for a GDF 6. I did a perusal on eBay and came across a number of tribrachs, none of which were numbered 6, but a few numbered 22.
I've done a search on Leica's web site, and found a paper on their tribrachs, and all their numbers are three digits (like 122). Anyone know the difference between a 6 and a 22?
The 6 was the standard tribrach for T2s and targets from 1960ish to about 1970ish.
It's old but gold.
16?
GDF 6 is metal, wood, and glass...a GDF 22 has plastic/carbon? parts
rfc, post: 374559, member: 8882 wrote: In a recent thread, someone suggested that if you had to do with used stuff, go with good used stuff. (Not exactly how it was put, but how I interpreted it). He mentioned looking for a GDF 6. I did a perusal on eBay and came across a number of tribrachs, none of which were numbered 6, but a few numbered 22.
I've done a search on Leica's web site, and found a paper on their tribrachs, and all their numbers are three digits (like 122). Anyone know the difference between a 6 and a 22?
GDF 6 was a Wild. You might try searching there. Best tribrach ever made, all metal, but in case of needing repairs I don't know if parts are still available. I still have mine with my HP 3810A and prisims. I've used Leitz & HP that I bought for my crews to use and tear up, but only bought Wild for my own personel use. I also had some Wilds that I turned out to the crews and they held up good with them too.
I can't speak for the actual differences because we don't own a GDF 6, but they don't really resemble eachother in appearance, and the GDF 6 would have been made before robotic instruments so it may not have the hysteresis rating. Just a guess though.
If you can snap up a good GDF 22, GDF 321 or GDF 122 off ebay then I'd do it.
Also I'm sure the same company that was making the GDF 122 for Leica also made Trimble tribrachs of a certain vintage, so they should be identical to the GDF 122. These come with the orientation spring and are rated to 1" hysteresis. Seco also market this tribrach I believe.
For example, this one I believe to be identical to a Leica GDF 122: http://www.ebay.com.au/itm/Trimble-Standard-Tribrach-P-N-58002007-With-Tribrach-Adapter-Prism-/281970417843?hash=item41a6bf20b3:g:I8UAAOSwMORW612Q&apos ;">Trimble tribrach ebay
GDF 6. Primo.
Dan B. Robison, post: 374562, member: 34 wrote: GDF 6 is metal, wood, and glass...a GDF 22 has plastic/carbon? parts
Where are there wood parts in GDF6?
The CLAMP CHUCK
🙂
Dan B. Robison, post: 374675, member: 34 wrote: The CLAMP CHUCK
🙂
I would've bet large that it was micarta.
Ironwood?
Larry Scott, post: 374688, member: 8766 wrote: I would've bet large that it was micarta.
, You may be right...
It looks like wood to me...
Maybe an old school Wild repairman can solve the mystery...
DDSM
:beer::beer::beer::beer:
I just looked. It's either oil soaked ebony or ironwood, and maybe later years micarta. But I just looked, and unless I scrape it with a file, it could be either.
All of ours (16 of them) appear to be Tufnol - the European equivalent of micarta.
Wood would split