UGL offers software for surveying computations, data management, and data conversion

Free42 is an HP-42S calculator simulator program developed by Thomas Okken. It was written from scratch and does not include any Hewlett Packard code. It runs on several operating systems including Windows, Palm, and Pocket PC.

For HP calculator lovers who miss their HP-42S, this program is in some ways better than the original calculator.

Free42 screen

Features

More details may be found at Thomas Okken's Free42 site.

Copan Extensions

UGL has added some programming commands to the Free42 program to enable program access to coordinate files used by UGL's Copan COGO software. This allows users to write HP-42S programs to manipulate the points stored in the coordinate files or to use the point data in other ways.

Free42 Copan Documentation

The documentation for the Free42 Copan Instructions can be found here.

Free42 Downloads

The Free42 software, as customized by UGL, is available for download here.

HP-42S Programs

Some HP-42S Free42 land surveys programs can be downloaded here.

Links to HP-42S stuff

Links to sites containing HP-42S and other Hewlett Packard calculator stuff are here.

Software