Update We finished the remaining 1.25 miles in 3 hours using 2 rods. The rods were exactly the same height. We used our rod for backsights and a borro...

@ jhframe Years ago USC&GS experimented with vent holes, and concluded that they don’t add much (if anything) to the installation ... That's very ...

@ MightyMoe Using a 0.75 in. rod will raise the cost of setting BM's. There was a discussion about drilling a small vent hole in each cap stem to prev...

@ chris-bouffard It amends section 472.0101 - Foreign-trained professionals; special examination and license provisions and section 472.013 - Examinat...

@ john-putnam The county used 2.25 in. brass markers in the past but has been using 3.50 in. aluminum markers for at least the past 7 years. I realize...

@ Bruce Small Here, in Orange County, FL, we're using 3.50 in. (split shank) markers, but we're switching to 3.25 in. (hexagonal shank) markers to sav...

@ Norman_Oklahoma At our last crew meeting, someone mentioned that the epoxy ring around the outside of a marker was coming off. We smear the excess e...

@ jhframe I had to do a little research on anchoring cement. Research indicates that it's a more cost-effective method, which the county would like. W...

The Standards and Specifications for Geodetic Control Networks (1984) have been appended (?) with FGCS Specifications and Procedures to Incorporate El...

@ Norman_Oklahoma I wasn’t aware that a digital level, or any level for that matter, has a least count. Please explain. If you reading to the thousand...

@ john-putnam You are saying the Topcon DL-502 does not have a mode to return the median of a set number of readings each time you take a measurement?...

@ Norman_Oklahoma If you are getting a lot of variation between successive readings it may mean that you are attempting sightings that are a bit long ...

@ kjypls You can verify the level rod bubble for plumb by sighting the edges with a total station in two directions. I occasionally check our level ro...