Backspace does not erase

A while back, I managed to snag the little instruction booklet that goes with an erly 20th century Dennert & Pape sliderule . In additio...

Spotted today - a typewriter for the right price, but of the wrong period for my collection. (And am out of storage space in any case :-) ...

One of those things that were once common and have quietly disappeared - the card index to the library. Not only does this index surviv...

With old typewriters, the escapement may sometimes skip a space - the age of the mechanism I've always thought. Hence with some surprise...

Having just read of the rich seam of typewriters that may be spotted on a San Fransisco area safari , I'm prompted to share at least one...

Occasionally picking up a nice sliderule (that is not priced through the roof), recently acquired this compact Mannheim sliderule. In the im...