~NEAR PERFECT EVERARD 4 SLIDE RULE-RARE DOUBLE SIGNATURE~

~NEAR PERFECT EVERARD 4 SLIDE RULE-RARE DOUBLE SIGNATURE~

$400(OBO)

BEST EVERARD RULER ON THE MARKET

Dimensions

12 x 1 1/2 x 3/4

Circa

1880

Country of manufacture

UK and Ireland

Categories: Calculating, Physics & Chemistry, Scales Weights & Measures, Other Technology Antiques, Tools

Description

<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!

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CA ScientificaOpticae

Scientifica Opticae

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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