Smyths parallactic ladder framework
Framed Prints
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Framed Print of Smyths parallactic ladder framework
Smyths parallactic ladder mount, details of the frame. This device was devised by the British optician and instrument maker George Dolland (1774-1852) and presented to the British astronomer William Henry Smyth (1788-1865). Its function was to act as an equatorial mount for portable telescopes, and to be cheaper and easier to construct than fixed mounts. The telescope would be moved by hand in the cradle, rather than moved by machinery. Artwork from A Handbook of Descriptive and Practical Astronomy (1890, 4th edition, volume II) by British author George Frederick Chambers (1841 1915). Science Photo Library features Science and Medical images including photos and illustrations. © ROYAL ASTRONOMICAL SOCIETY/SCIENCE PHOTO LIBRARY
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Media ID 9224075
1890 4th Edition Black And White Device Equatorial Mount Fourth Edition Frame George Frederick Chambers Instrument Mount Portable Stand Volume 2 Volume Ii
Modern 14"x12" (36x31cm)
Ready to Hang Contemporary Framed Prints adds style, protection, and a polished touch to your space - effortlessly.
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Wood effect frame, card mounted, 10x8 fade resistant photo print. Overall outside dimensions 14x12 inches (36x31cm). Environmentally and ozone friendly, 40mm wide x 15mm Polycore® moulding has the look of real wood, is durable and light and easy to hang. Biodegradable and made with non-chlorinated gases (no toxic fumes) it is efficient; producing 100 tons of polystyrene can save 300 tons of trees! Prints are glazed with lightweight, shatterproof, optical clarity acrylic (providing the same general protection from the environment as glass). The back is stapled hardboard with a sawtooth hanger attached. Note: measurements provided are estimated outer dimensions, which include both the image and the frame. While we aim to keep sizing consistent, exact dimensions may vary slightly due to differences in print size or production requirements, which may result in a variation in the overall size (up to approximately 2.5cm (1"))
These are individually made so all sizes are approximate
Estimated Image Size (if not cropped) is 15.5cm x 24.4cm (6.1" x 9.6")
Estimated Product Size is 31cm x 36cm (12.2" x 14.2")
