Since discovering earlier that Jordana has not one but six rulers, I thought I should share & show my own special ruler.
I, too, have more than one ruler but you’ll understand why this one is still kicking around: it’s a three-sided drafting ruler that belonged to my geologist dad. I inherited it since he no longer needs it (he no longers drafts but still has the drafting table… ahem office supplies hoarding, dad!) and as much as it is mildly confusing (to me) I can’t help but like its specificity and said handiness.
Ta-da! My ruler. I know, eh? It looks nothing like a ruler.
Now you get a better sense of it
The drafting ruler is made by Faber-Castell; the model number is indicated
and when I searched online I discovered that there are Faber-Castell
vintage drafting rulers for sale on Ebay! Who would have thought-? Mine is
definitely vintage but certainly not a fancy one
What makes this ruler special is that there are various ratio measurements
all along each side. So if you’re in school and you use the wrong side
to measure your algebra shapes you can kiss those homework marks goodbye.
You’ll find that each side offers two different sets of ratios running in the opposite
direction along the length, so there are six measurement scales in total (fyi)
I also like that the three colours along the sides are different:
red, forest green and black
Images courtesy of me.