COLUMBUS Version 3.7 demo kit has all the functionality of the full release (up to 12 stations and no limit on the number of observations).
Readme.txt file (includes comprehensive description of all new features), and sample network adjustment data files and reports are also included. The demo can be installed and run on Windows Vista, XP, 2000, 98, NT 4.0, and 95.
Click here for more information and a feature list or Download it now (approx 5.4 MB).

COLUMBUS Version 3.7.2.60 program executable
(stand-alone version - approx. 2.5 MB)
COLUMBUS Version 3.7.2.60 program executable
(network version - approx. 2.5 MB)
COLUMBUS Help Files (zipped) (approx. 380KB)
COLUMBUS Demo Files (zipped) (approx. 234KB)
- Note: If you originally purchased (not upgraded to) COLUMBUS Version 3.6.3.17 or later, you qualify for free upgrades.
- If you upgraded to COLUMBUS Version 3.6.3.17 or later, your upgrade price is US$80.00 (plus shipping and handling).
- Otherwise, upgrade prices are as follows (plus shipping and handling):

Installation Steps

Rename your current Columbus.exe file to some other name (for example, ColumbusOld.exe).
Download the Columbus.exe or ColumbusNet.exe file and put it into the current COLUMBUS installation folder used in Step 1. If using ColumbusNet.exe, rename to Columbus.exe.
When you run the new executable, you will be asked for a new Access Code (if you do not currently have 3.7 installed); contact Best-Fit Computing for the new Access Code.
To install the updated Help files, unzip ColumbusHelp.zip and place the Columbus.hlp and Columbus.cnt files into your Columbus installation folder.

TDS .rw5 and .raw File Conversion Tool (approx. 296K) quickly and easily converts a TDS .rw5 or .raw data file into COLUMBUS--compatible ASCII Text file. Click here for more information on this tool.
NGS Bluebook File Conversion Tool (approx. 208K) quickly and easily converts National Geodetic Survey (NGS) Bluebook G-File and B-File formatted files into COLUMBUS-compatible ASCII Text files. Click here for more information on this tool.
Nikon Raw Data File Conversion Tool (approx. 184K) quickly and easily converts a Nikon raw data file into a COLUMBUS-compatible ASCII Text file. Click here for more information on this tool.
Topcon XML File Conversion Tool (approx. 280K) quickly and easily converts a Topcon XML data file into a COLUMBUS--compatible ASCII Text file. Click here for more information on this tool.
Leica SKI File Conversion Tool (approx. 180K) quickly and easily extracts the SKI Date/Time record and assigns it to the description field for each observation set/GPS baseline. Click here for more information on this tool.
GeoLab IOB File Conversion Tool (approx. 176K) quickly and easily extracts Station and GPS baseline data from GeoLab IOB files. Click here for more information on this tool.

COLUMBUS supports the EGM 96 World Wide Geoidal Model (approx. 3000K), a geopotential model of the Earth consisting of spherical harmonic coefficients complete to degree and order 360. This model is the result of a collaboration between the National Imagery and Mapping Agency, the NASA Goddard Space Flight Center, and the Ohio State University. Click here for more information on EGM 96.