Alro 1010 Commercial slide rule full set 1950 Holland
€135.00
ALRO 1010 Commercial circular Slide rule in full set made ca. 1950 in Holland
1 in stock
This round slider rule is marked ALRO 1010, comes in it’s complete metal case with hardly a scratch on it. It was well kept in the original cardboard case and with full (Dutch) manual that unfortunately has suffered some damage. Made in Holland in The Hague around 1950 after the patents were received, for this unique and special model, called “Commercial”. Colorful model in great working condition with hardly any signs of use and age. Closed it measures ca 13,5 cm or 5 3/8 inches wide. See pictures for details. Check the attached video on how to work your vintage man tool : slide rule operation instructions! Do read the article on ALRO slide rules from Holland while you are here.