(YouTube Link)
Retro Calculators is a web museum of mechanical calculating devices, such as slide rules and adding machines. Its YouTube channel includes videos of these machines in use, including the above Faber Castell Addiator. This is a gadget that combines a slide rule with an adding and subtracting device.
Link via View from the Porch | YouTube Channel
Comments (2)
Never grow up,
Ladie's fit 2xl, black
Pink Freud Men's Large
Just before the computers took over?
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3xl would be great in black...
When Worlds Collide - Black - Men's 2X
danger in xl
turtle flag lrg
Or just use a saw.
--
Splatted Nightmare, M
Han AM, 2x, Grey
Abbey Road in Colors, Large.
When World Collide, black XL ladies
How I Learned To Love The Time Machine 2XL
Here's Looking at Euclid 2xl
Princess Alphabet, ladies fit M
They couldn't tell if it was a failure or not, since they never quiet understood the game...
And neither did I ;oP
[The Hare and The Shell - dark grey - L]
"Obey Gravity - it's the Law" - Women's Medium
(151% Old School, 6XL)
"Beaker full of science" - women's medium
Charlie Brownson Large Gray
et tailwhip, xl
Wait until you see Spock's steampunk-Ears...
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M-size, suggested colour
Evolution- Proving the Egg Came First, sz XXL
Damn Fine Coffee, Small