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.
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Object Details
ID: | ZBA7729 |
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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 |