<strong>A NEAR PERFECT EVERARD FOUR SLIDE BREWERS CALCULATING RULE WITH RARE DOUBLE SIGNATURE by ADIE AND CO-SIGNED BY HIS FOREMAN WEDDERBURN of THE EDINBURGH FIRM.</strong> 12″ LONG. PERFECT SLIDER ACTION WITH BRASS TIPS!
Ask the Dealer
Mark Hacking (Scientifica Opticae Inc.) has been an avid collector/dealer for over 30 years. A former Science teacher, he has an innate love for anything natural or mechanical. Specializing in optical (microscopes, telescopes), surveying, medical, weighing and drawing instruments, he is an active participant of the Scientific Instrument Fair in London. Living in Stratford, Ontario, Canada, with his wife and two children; Mark looks forward to meeting as many fellow collectors as possible, and has a worldwide following on eBay (Sciopti).
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