Original Leica Tribrach vs. China copy at fraction of price

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Original Leica Tribrach vs. China copy at fraction of price

Post by Bjoern »

wondering if anyone has had an experience with the Tribrachs you can get from ebay/china ?

I found this on ebay for $75
https://www.ebay.es/itm/295754118398?ha ... BM_L6r_Kdi

vs the original Leica Tribrach GDF322 for $450...

Anyone made the experience yet?
many thanks
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Re: Original Leica Tribrach vs. China copy at fraction of price

Post by Augusto 3D »

From what I was told by my local leica vendor and from some research, the more expensive Leica tribrachs are made for robotic total stations that are constantly moving and are set up in place for longer periods than a TSL. These more expensive tribrach are designed and manufactured with tighter tolerances to combat the vibrations of the instruments and hold their level. Less expensive models are made to lower tolerances and are meant to be used with manual total stations or traversing kits (basically equipment that doesn't move).

If you are planning to put your scanner on a tribrach (we are going to start doing this for exteriors with our Faro S+) then I would recommend the 323 series from Leica or any of the tribrach designed for use with a robot.

I am not sure if you have seen this:
https://images.squarespace-cdn.com/cont ... rmat=2500w

and this: (the more expensive and better-made tribrachs can hold position better)
https://www.geooptic.ru/static/files/te ... 05-blk.pdf

I know this is not what you asked, but I wouldn't put an ultra-cheap tribrach under our scanners. I think that it would defeat the purpose.
I hope this helps.
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Re: Original Leica Tribrach vs. China copy at fraction of price

Post by Leandre Robitaille »

We use these on all our TLS scanners. Cheap to buy, we have a few spare units we use for parts when needed.
https://www.amazon.ca/gp/product/B00HJC ... =UTF8&th=1
And this 5/8 adapter
https://www.amazon.ca/gp/product/B07Q79 ... UTF8&psc=1
We calibrate them with a total station and they are good to go.

As for traverse kits, total stations, we have the 400-500$ tribrach, they are much more resiliant to temperature dilation and will keep your instruments from loosing bubble. A TLS scanner rarely stays in the same position long enough to worry about heat distortions. No need to go expensive with tribrachs on a faro scanner, I would say go high end tribrach for total stations/traverse kits, go cheap with spare parts for TLS.

For those reading this that are using Faro scanner, see my post here on how to mod you s70 case so your tribrach doesn't get damaged in transport ; viewtopic.php?p=103871&hilit=tribrach#p103871
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