For latitude 49°. Wind rose with 32 numbered points; half labeled in German. Rotating arm with pivoting hand. Hole to view compass needle; stepped for glazing. Four latch hooks. Three punchmarks of thrush on twig (2b).
مادة
"HANS TROSCHEL•" on 1b.; "PERGE SECVRVS * MONSTRO VIAM" motto on 1a.