Precision compass Bergeon

Precision compass to detect magnetism. Storage means sapphire and hardened steel tip. Engraved Dial "13 mm.

Operating Instructions: An object is magnetic, is when the magnetic needle tightened on one side and cast off on the other side. If the magnetic needle is coated on both sides, so no magnetism exists.

Scope of delivery:
• Precision compass
• Wooden Case

Bergeon No. 30103