Geocomp Systems
Free Software
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GeoCalc 4.20

GeoCalc 4.20 is a 32-bit Windows application that uses seven-parameter transformations to convert ASCII coordinate data files between mapping systems. Pick from the extensive list or define your own. GeoCalc 4.20 is distributed free of charge.

Terramodel Field data module

You can download the complete installation for Terramodel. This includes the Terramodel Field data module that allows you to open, view and edit Terramodel .PRO project files and to import and export some common data types.

If you already have a Terramodel dongle (hardware security key), you may be able to use other Terramodel modules. If you also have current Customer Care Membership from Geocomp Systems, you can also download and install the Geocomp Update.

Trimble Data Transfer Utility

This utility, which transfers data to and from various hardware and software devices, is available by download and with many Trimble products.

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