Colfax High School InvenTeam

Colfax, CA
Construction layout tool
Team Website

The Colfax High School InvenTeam invented the "Tri-Metric," a mechanical trigonometric calculator that combines residential construction design and layout into a single process. The tool uses dynamic triangles to find angles and slopes which is then transferred to the work piece. It is under a square foot in size and has a simple user interface. In addition to residential construction, the "Tri-Metric" can be used for teaching trigonometry. The tool saves money by taking the key attributes of a saw guide, angled level, and a combination square and puts them into one useable tool. It can decrease layout time by 20%. It will be manufactured for under $20 per unit.


January 27, 2020

Video of our working prototype"

January 22, 2020

We hosted a visiting school and taught Forest Management practices and best ways to make your community more fire safe. Two minute video of day;

December 28, 2019