Drill bit

Tri-cone drill bit with milled-steel teeth, used for drilling into soft rock formations such as clays, soft limestones, red beds and shale; diameter approximately 7.5" (191 mm); MSDGHQC.

Object Details

ID: ZBA7729
Type: Drill bit
Display location: Display - Sea Things Gallery
Creator: Unknown
Date made: circa 1998; about 2000
People: Santa Fe Drilling Co Techserv Ltd
Credit: National Maritime Museum, Greenwich, London
Measurements: Weight: 470 kg
Parts: Drill bit