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c1903 Military Marching Verners Compass Mk IV by Steward
  • c1903 Military Marching Verners Compass Mk IV by Steward
  • c1903 Military Marching Verners Compass Mk IV by Steward
  • c1903 Military Marching Verners Compass Mk IV by Steward
  • c1903 Military Marching Verners Compass Mk IV by Steward
  • c1903 Military Marching Verners Compass Mk IV by Steward
  • c1903 Military Marching Verners Compass Mk IV by Steward

c1903 Military Marching Verners Compass Mk IV by Steward

Price:

£250.00


Product Description

A nice condition c1903 Military Marching Compass Mark IV, in working order.

This design was patented by J.H. Steward, but on a design put forward by Colonel Verner. The compass has a nickel and brass body, with a dry card wheel. The card design is the one of the Royal Geographical Society (R.G.S.): the NORTH direction (black diamond) could easily be distinguished in the dark, because the background glowed greenish blue. When this compass was produced, "glow-in-the-dark" paint was added on the compass dial and to the lid.

Phosphorescent paint is commonly called "glow-in-the-dark" paint. It is made from phosphors such as silver-activated zinc sulphide and typically glows a pale green to greenish blue colour. The mechanism for producing light is similar to that of fluorescent paint, but the emission of visible light persists for some time after it has been exposed to light. However, it didn’t last long and was soon replaced by a prismatic version, which permitted more accurate readings.

The brass cover is stamped ‘No 1497 VERNER COMPASS PATENT J.H. STEWARD 406, STRAND LONDON.

Size: 7.5 x 5.5 x 2 cm (3 x 2 1/8 x ¾ inches)
Weight: 114 g

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