WWI French Compass with Radium Paint

Handsome French Brass Pocket Compass. Circa 1914. Needle lock on side, with adjustable inner needle. Half-blued steel needle with Sapphire pivot. Marked 'Made in France'. Needles painted with Radium dots, likely used for military application during WW1 (needles still glow in the dark).

Later model featured in the Adler Planetarium