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GIAA mailbag

This month we are highlighting a technique that a reader has been using for quite a while. Arthur J. Saarloos of Delta Junction, Alaska, sent it in hoping we would share it with the readership.
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GIAA Mailbag

When I used optical theodolites, I checked and adjusted the horizontal and vertical collimation myself. I noticed in my new total station's instruction manual that I only have 30 arc seconds or so of adjustment I can use. The manufacturer requires that I return it to an authorized service center for larger collimation adjustments. Why?
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GIAA Mailbag

I know that the bubbles on my prism/antenna poles can go out of adjustment. How much of a problem is this? And how do I check them to see if they're in adjustment?
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GIAA Mailbag

I have a two-part question. I have a total station setting for curvature and refraction correction. To turn it on, I have to select from one of two constants to be used in the correction. Which one should I be using? The second part of my question comes from noticing that my surveying textbook (Moffit & Bossler) uses only one constant for the curvature and refraction correction. Why the difference?
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GIAA Mailbag

When the target centering feature of my servo-driven total station is switched on and I do a visual check through the telescope, I often find that the telescope cross hairs are not on the target. There seems to be a constant offset above and to the left of the target. My instrument dealer has told me not to worry about this. He says that the instrument has been calibrated and that a software correction is applied. Is this true? Should I be concerned?
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HxGN Live

More than 3,500 attendees from more than 70 countries attended HxGN Live, the annual Hexagon AB user conference, at the MGM Grand Hotel & Casino in Las Vegas on June 3-6. About 450 keynotes and panel discussions were held, and several companies from around the world exhibited their geospatial products. Here are a few snapshots from the event.

POB

POB May 2015 Cover

2015 May

In this May 2015 issue of POB, we take a look at the keynote on technology in the information age given by Andy Lowery, DAQRI CEO, at this year's SPAR International.

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YOUR SUMMER PLANS?

Surveyors, with the weather finally starting to improve everywhere, are you thinking about the long days to come? This summer, you are going to …
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