“Portable” sure has changed over the years.

@jaapsch2

3 ай бұрын

Sure has, but it must be said that it is a lot lighter than the Burroughs Portable

Cool to see an original "Portable" branded one of these. I had to go back and check my early Corona branded one to see if it had the same behavior of needing to press the 0 keys, and it does (despite the 0 keys on that one just being red ovals and not actually labeled 0). Interesting too that the rebrand to Corona seemed to coincide with the addition of a actual total key

@jaapsch2

3 ай бұрын

I had assumed that the mechanism was updated with the red keys. I'm sure they updated it at some point, but I don't know when. The National Museum of American History has a Portable with the extra Total button, so that update was not quite simultaneous with the rebranding, but it was close enough that it wasn't reflected in the ads. Thanks for your repair video - there were some springs missing in the spool mechanism and your video helped me figure out where they were supposed to go.

Are subtotals in any way marked as being subtotals? (other than having leading zeros)

@jaapsch2

3 ай бұрын

No. There is a little dash after totals, just like the non-add numbers, but nothing after subtotals or addends. The mechanism is trivial, as the non-add button just raises the dash symbol type in place for it to be printed regardless of whether you do a total or a non-add.