An Unusual Quarter Plate Spectroscope Camera By A. AN UNUSUAL QUARTER PLATE SPECTROSCOPE CAMER, English 1st quarter 20th century, signed on a plaque'Manufactured By, A W Penrose & Co Ltd, 109 Farringdon Rd, London E.Description: The camera is constructed from solid French polished red mahogany. The front of the camera has a pull out section with a single condenser lens. Behind this is a section of mahogany with stage clis possibly for a specimen to be examined. Behind all of these is an adjustable slit signed Penrose. Internally there is a lens signed Penrose, London that incorporates a compound prism and lens that focusses the spectrum onto the glass screen at the rear of the camera. The two brass nuts at the side are used to focus the internal lens. At the back is a tall thin focussing screen and a quarter plate plate holder that both run in a track. Condition: Cosmetically The camera is in very good condition with a good bright finish to the French polished mahogany. The brass retains much of its original golden lacquer. Internally a piece of aluminium has been used to replace a broken piece of wood used to focus the lens. However the camera appears to work but you need a very dark room as the spectrum is very faint Apsley Antiques Mailing List Please join our mailing list on the leftof the page. We know how items are handled In the postal services. We go out of our way to provide all our items with the care in packing they deserve. We use the best quality packing not second-hand re-used battered old cardboard boxes. We use super strong fibre tape and try to always double box where we can For large deliveries within the UK we use a private courier firm. Typically for large items i. Please use the contact details on the left of the main page. L'item "Unusual Spectroscope Camera By A.
Penrose, London Brass Mahogany wooden" est en vente depuis le mardi 10 novembre 2015. Il est dans la catégorie "Antiques\Science/ Medicine\Scientific Instruments".
Le vendeur est "apsley" et est localisé à/en Reading. Cet article peut être livré partout dans le monde.