Mural quadrant
Image information
Sizing information
| Overall size (inc frame) | x cm ( x in) |
| Depth | cm (in) |
| Artwork | x cm ( x in) |
| Border (mount) |
cm
top/bottom
(in)
cm left/right (in) |
| The paper size of our wall art shipped from the US is sized to the nearest inch. | |
Mural quadrant
This 8ft Mural Quadrant was made for the second Astronomer Royal, Edmond Halley by (or under the direction of) instrument maker George Graham and was such a success that it became a prototype for similar instruments all over Europe.
A mural quadrant is, as the name would suggest, a telescope mounted on a quarter circle frame which is then mounted on a wall aligned north-south so that the two sides or radii run vertical and horizontal. The telescope is pivoted at what would be the centre of the circle while the circle's circumference carries a scale from 0 to 90 degrees. This allows the observer to measure the angular height of the star he or she is observing.
Telescope: The tube length is 8ft with an 8ft 0.5inch focus. Its object glass was replaced in 1789 replacing the common OG with an achromatic one.
Mount: The mount is made up of an iron and mahogany frame with a brass scale divided into 96 parts by subdivision which could then be readjusted to produce a 0-90 degree angle scale. The scale was redivided by John Bird in 1753 and the quadrant remounted to face north instead of south.
George Graham
Original size: 2438 mm
- Image reference: L2157-002
- National Maritime Museum, Greenwich, London
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Our framed prints
Every framed picture is created by hand in our workshop by specialist framers.
Black, white, brown, silver, gold or natural frames available, supplied ready to hang.
All our frames have a smooth satin finish, and measure 20mm (front face) by 23mm (depth from wall).
Read more about our framed art prints.
Manufactured in the UK
All products are printed in the UK, using the latest digital presses and a giclée printmaking process.
We only use premium branded inks, and colours are independently verified to last between 100 and 200 years.
Delivery & returns
We print everything to order so delivery times may vary but all framed pictures are despatched within 5-7 days via courier or recorded mail.
Due to the coronovirus pandemic and Brexit situation, current shipping times may be longer, particularly for destinations outside the UK.
Delivery to the UK is £10 for a single framed print.
We will happily replace your order if everything isn’t 100% perfect.
