C1780 Floating Pocket Sundial & Compass. A very collectable end of 18th century turned fruitwood Compass Sundial in a round covered case, with floating compass and sundial with paper insert compass rose. The paper dial rests in a fine pin and on top of the dial is a gnomon (the angled part of the sundial that casts the shadow). All of this rests in a turned wood cylindrical case with a domed glass lens.
The turned lid closes over the glass to protect it when stored in a pocket. The sundial/compass is in good working order. There are a couple of stress cracks to the case and lid, but these appear stable. There is a small bit of the wooden lip that holds the lens, which is missing, but the lens is secure.A gnomon compass sundial is an instrument for determining direction and time based on the direction of the sun and a pointer (the gnomon) cast on a graduated plane. It was the main method of judging direction and time before the 16th and 17th centuries and were often made of brass and fruitwood. Size: 4.3 x 3 cm (1 5/8 x 1 1/8 inches) Weight: 17 g. Have a look at our other items. If you have any questions we are more than happy to help. _gsrx_vers_804 GS 7.0.8 (804). The item "C1780 Floating Pocket Sundial & Compass" is in sale since Wednesday, April 12, 2017. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "paradeantiques_online" and is located in Plymouth. This item can be shipped worldwide.