I have a Geodolite 504 in which the internal battery reached end of life and failed. As a result the 504's memory lost its power and along with it the...

March 9 2019 Peter: For quite some time, I've considered using Linux. So, based on your discussions, I chose to try out Linux Mint LMDE - running from...

A reasonably robust method to determine the combined constants for instrument and prism is to set up and measure among four points, each about 15 or 2...

Personally, I've never used a database program easier to use than FileMaker Pro. I have been using it since about 1990. Some info:FileMaker.com:

A sample description prologue:A metes-and-bounds description of _____________, as a result of and based upon ________ County records research, and NOT...

Scott,Wondering if "conversation" message I sent a while back went through? I've done logic analysis, in response to your post of September 4, in whic...

Mark Silver, post: 449366, member: 1087 wrote: Yes.SPSO / TBC information is embargoed until October 6th. (I probably should not have said that.) So j...

Mark,Enjoyed viewing the pictures but, didn't have time to digest all the content. Did you discover or notice any information or displays announcing p...

Agreement with Loyal!The amount of time, effort and money that can be wasted because of a defective position for just one control point is incaluculab...

Interestingly, Edmund Scientific, in the mid or late 70's listed surplus prisms in their catalog. As I remember, some were chipped or scratched but, t...

ScottFound some time to generate and assemble some test data for two circles and tangents. Data are ordered, top down, xca, yca, ra, xcb, ycb, rb. I b...

ScottNicely organized spread sheet for survey calculations. Am busy now but when and if I get the opportunity, I'll do a few checks for you.

Beerleg transitioned to RPLSToday is doing a great job and service for its users. I look at the pages less frequently now than in the past. However, I...

Sketchup, formerly by Google and now Trimble, provides real time analysis of sun shadows for any location.

Thanks Mike1202I used the URL you provided and obtained a pdf file. Lots of good useful information I've never had the opportunity to see prior. Too b...

GeneThanks for providing informational response.The gentleman at Martin Instruments who talked to me on the telephone did not even remember the Geodol...

Have been using ProgeCad for ten years and am satisfied. My version, ProgeCad 2006 has in certain instances had difficulty creating xref. In those cas...

Conversion of decimal feet to feet, inches and fractionsFor older versions of Excel along with some variationsThe included spread sheet differs some f...

Mark-to-mark distances are the same on both the ellipsoid and the geoid. As such, they are the common elements between the abstract mathematical model...