I also collect various vintage drafting tools like old technical pens, and lettering sets. I thought it may be fun to make this post to see what else you guys collect.
This was a very recent eBay purchase- I have to admit that prior to seeing this I had no idea it existed.
This is the ACU-ARC ruler by Hoyle Engineering. The instructions say it can be used to draw an arc of any radius from 6.75 to 200 inches. It came with a case, instructions and warranty card dated 1972.
That’s neat
Hope that Fanta orange plastic isn’t brittle!!
someone on r/Drafting_Instruments said something to that effect (keeping in in the case out of UV). So far, nice and pliable still. 
They are soulmates
Nice tool…think I saw one of those on eBay years ago.
I think one of my favorite drawing
/drafting tools (that still works!) is this U.S. Automatic pencil sharpener from 1906….
Fantastical. Can we get a video of this sharpener in action?
Thanks, sure give me a bit and I’ll upload one​
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What is cool is the facets it leaves on the wood, which get a bit finer the longer you crank it.
Wow, the faceted shaving effect is really special.
@amjacobs7 Remembered I had posted this video on Instagram years ago:
See video link above….the shavings are cute too​
So cool. Thank you. I love the mechanism.
I looked up more info on your sharpener. Pretty legendary. I learned from this article that Automatic Pencil Sharpener Co. was abbreviated APSCO, which rang a bell in my head. I recalled I have an outlandish item from them: Tri-Pointer.
Glad you liked it. My favorite thing is how it is geared to automatically feed, and turn the pencil slightly with each crank to eventually fully sharpen the pencil…great engineering and built to last…ha!
Wow..haven’t seen the Apsco Tri-Pointer before! What a cool machine…
Do you mean that the pencil rotations are out of phase with the cutting blades so that each time the pencil completes a rotation the cuts are in a different place?
I don’t think so, it seems it just takes a little bit less wood as the diameter goes down. Then the finished sharpening looks less rough. Fun machine at any rate…
Actually, you may be right on that point…will have to investigate further​
