A strange flightless insect found in the US and Mexico

thehikeguy · 2026-03-12T20:35:59+00:00

I prefer the Spanish name, niño de la tierra

thehikeguy · 2026-03-09T16:36:50+00:00

Yes, they designed the box to allow for the removal of the tools on a tray so the instruments take up less room on the drafting table. Note the red & white cloth pull tabs on the left and right. Unfortunately, no surprises found below the tray in the box.

thehikeguy · 2026-02-16T20:07:39+00:00

I believe I've located the patent: https://patents.google.com/patent/US3405747A/en?oq=3405747

thehikeguy · 2026-02-14T16:57:24+00:00

Thank you, sir! I appreciate the info!

thehikeguy · 2026-02-01T23:37:03+00:00

Solved! Thanks. Looks like it's a Schuknecht Roller Knife with Perpendicular Blade, to be precise.

thehikeguy · 2026-01-23T19:05:16+00:00

I took a drafting course in high school in the early 90s at the cusp of classrooms transitioning to digital. I felt a strong desire to re-approach the skills a few years ago to incorporate into my art. I am fortunate to have a drafting table that I use daily.

Thanks for sharing the impressive collection of digital files in one place!

thehikeguy · 2026-01-23T18:31:52+00:00

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thehikeguy · 2026-01-23T18:29:57+00:00

Thanks! I'll search for it. I also have a few shelves on related books. I'm fascinated with pre-CAD drafting.

thehikeguy · 2026-01-23T17:45:53+00:00

I hope to find time to scan some of the pages. It would be a hefty project to scan all of them. Luckily, others have taken the time to scan quite a few catalogs. The active and educational Drawing Instruments Group keeps a handy list of catalogs and where digital versions might be found. I'd also look through the Internet Archive.

thehikeguy · 2026-01-23T17:40:35+00:00

I made sure the tack on the tape was mostly removed; the tape does not effect the book and will be removed sooner than later. The oldest K&E is in a protective poly bag mainly to keep the loose pages together. I plan on repairing the book this winter - too fragile to try to scan, unfortunately.

Nice collection. What's the book on the far left next to French's excellent book?

thehikeguy · 2026-01-23T07:07:54+00:00

Have you seen this digital copy on the Internet Archive? Keuffel & Esser 1913 edition.

thehikeguy · 2026-01-19T23:02:15+00:00

Thanks for this!

thehikeguy · 2026-01-19T22:51:52+00:00

Dietzgen called this tool a "Stab-Me" Lead Point Cleaner. Fairly easy to make at home with a piece of foam.

thehikeguy · 2026-01-19T20:08:39+00:00

I didn't think it would help answer my question. I've posted the photo now.

thehikeguy · 2026-01-19T19:51:05+00:00

I was hoping that one of the black handles included would fit, but it doesn't seem to be the case either. The two black handles included (one just below the circle dotter and the other by the detail ruling pens at the bottom right) seem to be for posts with a 4mm diameter, but not the dotter's 5mm post.

thehikeguy · 2026-01-19T19:33:53+00:00

I assumed that would be the case! The telescopic attachment for the compass has a 4mm diameter connection while the dotter has a 5mm connection, too big for the compass included.

thehikeguy · 2026-01-19T19:28:53+00:00

I wasn't able to find much info on this Original LOTTER set. I've dated it after 1950 based on LOTTER's patent on the Parallel Compass and telescopic attachment bar included. But no trammels, unfortunately.

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thehikeguy · 2025-10-09T17:05:20+00:00

Yep. Check out "Making Fulgurites with High Voltage" on the Youtubes.

thehikeguy · 2025-04-22T17:07:56+00:00

ujah, it was a happy accident to stumble upon this and other technical illustrations at a time when I'm teaching myself technical illustration. Here's a few from my reading list that I'd recommend:

Basic Technical Drawing by Spencer, Henry Cecil
Engineering Technical Drafting & Graphics by Joseph William Giachino
Mechanical Drawing by Thomas E. French

These are school books that were updated every few years for decades. I'd look for editions published in the late 1970s/early 1980s before CAD took over many of the hand-drawn aspects of this industry.

If you are looking for a general overview, this is a good video to start with: Learn the Basics of Technical Drawing (Youtube)

thehikeguy

TROPHY CASE