Parallel rule
The parallel rule was designed to assist in drawing parallel lines accurately. For navigators, this is particularly important in laying off a specific course on a chart and parallel rules are still used today. They were invented in 1584 by a Frenchman, Mordente, but do not seem to have become common in navigation until the 18th century. This example is made of ebony with brass fittings. It was originally used by Vice-Admiral the Hon. A. C. Stonatt, when he was naval officer of HMS ‘Lion’ during battle of Jutland. He later became Master of the Grand Fleet.
For more information about using images from our Collection, please contact RMG Images.
Object Details
ID: | NAV0601 |
---|---|
Collection: | Astronomical and navigational instruments |
Type: | Parallel rule |
Display location: | Not on display |
Creator: | Unknown |
Events: | World War I: Battle of Jutland, 1916; World War I, 1914-1918 |
Vessels: | Lion (1910) |
Date made: | circa 1914 |
People: | Strutt, Honourable Arthur Charles |
Credit: | National Maritime Museum, Greenwich, London |
Measurements: | Overall: 6 mm x 609 mm x 75 mm |
Your Request
If an item is shown as “offsite”, please allow eight days for your order to be processed. For further information, please contact Archive staff:
Email: library@rmg.co.uk
Tel: +44 (0)20 8312 6516 (during Library opening hours)
Click “Continue” below to continue processing your order with the Library team.