3GT file extension - Micro System Options 3D Graphic Tools model file
What is 3gt file? How to open 3gt files?
File type specification:
The 3GT file extension is associated with the 3D Graphic Tools add-on for Microsoft Visual Basic and Microsoft Visual C++ development environments created by the Micro System Options. The .3gt file stores 3D model.
3D Graphic Tools seems to be obsolete product.