Plastic Math Set

I thought I'd use the 6 inch ruler and protractor the most, and while I do use them, it turns out that I use the triangle the most. I'm using these to learn basic trigonometry again but the little triangle is really handy in measuring small parts, so handy that I often forego using my 25mm/4 inch Mitutoyo caliper and use the triangle instead. When using the triangle on graph paper the perpendicular edge is short enough that I can spin it freely on standard A4/Letter size. I ordered 5 more sets from here at draftingsuppliesdew.com and even after the added shipping they were cheapest here.

This is a handy kit to use on my works . From drawing graphs / plots , mechanical parts , schematic corrections and flow chart layouts . Easy to transport in my notebooks , next to my calculator and / or inside the cover of a textbook for quick access ,