DRILL BIT

https://search.bvmuseum.org/link/artifacts1531
Material
METAL-STEEL;
Description
Large drill bit has twist extending the full length from one end to the other. The bottom 15.5cm of bit is smaller in circumference to fit the chuck of drill. Visible markings '2' on the end.
Category
TOOLS AND EQUIPMENT FOR MATERIALS
Sub-Category
METALWORKING TOOLS AND EQUIPMENT
Description
Large drill bit has twist extending the full length from one end to the other. The bottom 15.5cm of bit is smaller in circumference to fit the chuck of drill. Visible markings '2' on the end.
History Of Use
Drill bit used in percussive drill on the C.N.R.
Material
METAL-STEEL;
Length
36.5
Diameter
Top: 5 Base: 3.5
Circumference
14.5
Units Of Measurement
Centimeters
Accession No.
1996.0006.0001
Type of Record
Museum Artifact
Less detail