A substantial and finely crafted solid metal prismatic marching compass with precision brass internal workings and glass viewing window. The design follows the British Army Mark III survey compass pattern, complete with folding sight vane, mirror, spirit level, rotating azimuth ring, and engraved “Natural Sine” trigonometric chart inside the lid.
This example, purchased in Greece, is fully functional and built to high standards — solid in hand with a reassuring weight and fine mechanical movement. A superb piece for display or field use, evoking early exploration, surveying, and navigation history.
Features:
Solid metal body with brass interior components
Folding prismatic sight and mirror for accurate bearings
Spirit level and rotating degree ring
“Natural Sine” reference plate (used for angle and distance calculation)
Locking transit screw on base
Dimensions: 7.6 cm W × 9 cm D × 3 cm H
Condition: Excellent vintage condition, light patina consistent with age and use
Origin: Likely British manufacture, mid-20th century
A beautiful collectible or decorator’s piece for any vintage explorer, mariner, or military enthusiast.
