Extremely rare and antique drum calculating machine for the construction industry (engineering device). Only the 5th time offered worldwide (last one offered on 22 november 2008). This apparatus has a fantastic mystical looking. It seems to be an archaeological device that opens a portal to other dimension, as a magical device from Ancient Egypt used in a movie. Made by Et Ultra Washington in Italy during 1920 s´.Very low serial number: 106. Really impressive apparatus with concrete slide rules of metal. Height concentrical slide scale rings (each scale slides independently) and several rotating scales on side (you can see rules through slide window on side). Original antique condition (not restored in any way to preserve its original condition).
Measures: 28.5 centimeters X 28 centimeters X 17 centimeters. All defects not mentioned but visible in the pictures will be considered as described. If you have any question, do not hesitate to contact me.Thank you for your visit. The item "ET ULTRA WASHINGTON ANTIQUE CONCRETE SLIDE METAL RULES DRUM CALCULATING MACHINE" is in sale since Thursday, January 16, 2020. This item is in the category "Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Other Antique Science Equip". The seller is "liancollect" and is located in Buenos Aires, Buenos Aires. This item can be shipped worldwide.