Progress is fine, but it's gone on for too long.

Dodge, trying hard in the depth of the Depression.  

 Price on request...

 

 Above, parts of the micrometer. below, the first micrometer made by Jean Palmer of France in 1848, as brought back to the US by Joseph R Br...

 Child-Life Arithmetics 6 by Breed, Overman & Woody, 1936. Oneletterwords  Wasn't the future womderful?

  Why doesn't everyone know this?

  I'd probably have more fun with these at retirement age than I would have as a kid.  

John L Feirer Earl Tatro, Machine Tool Metalworking, McGraw Hill 1961  

1917 Powerplus  

 The first and ubiquitous worm drive hose clamp invented in 1921 by Commander Lumley Robinson of the British Royal Navy. Usually made from s...