The twin lenses (undamaged) are mounted in a brass ring that is fixed on a hinged arm. Although unsigned, it can be attributed to W & S Jones, announced in 1798 and popular for most of the 19. The instrument measures just over 3 ¼ inches by 2 ¼ inches when open. The original box is of stiff board covered in (embossed with a fleur de lys) maroon paper.The item "FLEAGLASS 18th Century NATURALISTS MAGNIFIER" is in sale since Wednesday, July 1, 2020. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "canis_est" and is located in Holt. This item can be shipped to United Kingdom.