The only problem is they don't make one pole with adapter's for bayonet/5/8th thread so need pole for robot and another for GNSS.
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Apart from cost it is another pole to have to carry in the truck/calibrate. Be simple for them to make an adaptor that clips on bayonet with 5/8th thread that still gives correct pole height for GNSS head. They already do for GNSS base so height hook works.
@lukenz The GAD31 is for just that purpose.?ÿ The GLS12 even has a lock position for 2m GNSS operations.?ÿ It also works with the standard GRT144 carrier and GZS4 tape hook for vertical GNSS measure-ups on a tri-pod.
Carbon fibre poles are light and nice when new - but I break them
With regard to weight - I've attached an iron rod, 5/8" x 30", to each leg of my bipods to add weight. Keeps them from blowing over so easily.?ÿ I'm not so big on the low weight aspect. But I'm not stacking day upon day of high production topo either.
With regard to breaking rods - I instruct my people to tighten things using their fingertips only and not by grabbing a fistful of knob and cranking on it. Lightweight stuff needs to be handled with a light touch.?ÿ Using the strength of the fingers only qualifies.?ÿ
I never use the GPS under 2m because well, what the hell is in the way above it if I'm lowering the GPS receiver....
The pin is stable, can get the way, and even if you're like me and NEVER bust a rod height, and forget to update the prism height selection in Access(I have 5 prism heights based on conditions), remains at the elevation you've been shooting. So when you do find your "unicorn" moment of oh no, it's at The only elevation it could be since the last change.?ÿ
That is not a Leica made pole adaptor, well aware of those Seco ones but it will not make one of the Lecia poles read the correct height from pole graduations for both GNSS with 5/8th to prism with bayonet in the same way the Seco 'quick change' poles can.
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Happen to like the weight and build quality of the Lecia poles better just pity they don't make an adaptor that clips on bayonet so the pole height graduations are still correct with adaptor plus GNSS head, in particular the GLS12 pole
Pretty sure the GAD31 is not long enough to clip to a bayonet pole and have the GNSS at the height the pole graduations read? Sure we checked that on a GLS12 in past as have the GAD31 on the GNSS set.
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I want an adaptor that is correct length so that prism on bayonet the pole graduations are true and then when you clip adaptor and GNSS on the pole height graduations are also true.
@oldpacer: There is a metal version of that rod that is not much heavier than the CF one.?ÿ One slight drawback of those rods is that the lock buttons are actuated by a spring inside (between the buttons) that pushes the buttons into the holes in the outer section of the rod.?ÿ When the buttons wear out from sliding inside the outer section, the spring will force its way through the now thinned plastic button and shoot out, most likely causing it to be lost in the process.?ÿ A watchful eye may help prevent this.?ÿ That said, those rods are proof against incorrect rod heights.?ÿ They are my preference for rover rods.
@lukenz No, the GAD31 does not give the same height as the TPS, it is 50 mm lower.?ÿ Like I said, the GLS12 has a 2 m pin lock for both TPS and GNSS (as well as GNSS mounted to the prism).?ÿ Personally, I created an antenna type that applies the -50 mm vertical offset between height reading and antenna height.
That idea about the antenna type is excellent as can do that with Leica software, one of those obvious things I didn't think about.
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I'm using Geomax XPAD though and it isn't quite as customisable. You can set custom prism types that allow for a bayonet adaptor on 5/8 pole (GLS13 only has 1.8/2.0 snaps so bit limited for TPS work) similar to Seco one above but GNSS just assumes it's sitting on a pole of the correct height. May have to get a custom adaptor made for GAD31 to make up difference.
The other drawback is the fine threads that locks the pole in place is sensitive to dust/grit and gum up pretty easy, at least the Leica GLS30 one does.
