Thursday, May 25, 2006

Lightning Adding Machine

lightning adding machine
Here's an odd item I ran across years ago in a second-hand shop. The Lightning Adding Machine.

The metal mechanism sits in a stand made of bakelite. You can turn the metal dials with a stylus, and when a dial goes past 9, the next dial increments by 1. Numbers show in little windows above the dials.

An included instruction sheet shows how you can use this device to add, subtract, multiply, or divide. "As simple as dialing a phone... and instant in response!" You could order another Lightning Adding Machine for only $12.95 postpaid, from the Lightning Adding Machine Co., 543 S. Spring St., Los Angeles 13, Calif.

Just from the look of things, I'd guess that this little mechanical adding machine dates from the 1940s.

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3 Comments:

Anonymous Lucy said...

Ok. I don't get all excited about slide-rules, but THAT is indeed pretty nifty!

Thursday, May 25, 2006 8:26:00 AM  
Blogger Richmond said...

Very cool!

Friday, May 26, 2006 9:19:00 AM  
Anonymous Naomi said...

We have one at the East Coulee School Museum here in southern Alberta, Canada. I'm making up a display info card about it. Going to put something about "Quick like lightning, let your fingers do the figuring". School groups gravitate to it when they tour here. Kids love mechanical stuff.

Monday, August 18, 2008 12:37:00 PM  

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