An antique late C18th or early C19th brass folding vernier protractor by W&S (William and Samuel) JONES of Holborn, London, who. Were among the most succesful Scientific Instrument makers in London at that time. The protractor has a diameter of 7.75 in (297 mm) and is adjusted by rotating the pinion which acts on a rack around the perimeter of the instrument for plotting theodolite readings.It is in very good condition with no damage (pointer missing from the end of the one of the arms which should be fairly easy to replace, if necessary) and would make a great addition to anyones collection, display or for use etc... The item "FINE ANTIQUE W&S JONES HOLBORN/LONDON BRASS FOLDING VERNIER PROTRACTOR 7.75" is in sale since Thursday, December 26, 2019. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "bizzy-lizzy99" and is located in Preston. This item can be shipped worldwide.