File:Nma.img-ci20102591-128-ei-vs1.jpg

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Tri-cone rotary drill bit   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Jason McCarthy, National Museum of Australia
Title
Tri-cone rotary drill bit
Description
Cylindrical iron drill bit, with a thread at one end, three sets of geared teeth at the other end, metal rivets along the outside surface and a fold-down cap inside the thread to attach to a drill. Used in the mining industry. In the National Historical Collection of the National Museum of Australia.
Dimensions Diameter at threaded end 110mm
institution QS:P195,Q1967496
Accession number
IR 5255.0001
Credit line When using this image, please credit the photographer and the National Museum of Australia
Inscriptions 'ST' is engraved on the surface
Source/Photographer Self-photographed

Licensing[edit]

w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 3.0 Australia license.
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  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

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Date/TimeThumbnailDimensionsUserComment
current04:17, 20 December 2016Thumbnail for version as of 04:17, 20 December 20161,092 × 1,600 (847 KB)NatMuseumAust (talk | contribs)pattypan 0.4.0

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