Partially furling sails to lessen wind resistance or partially unfurling sails to make them ready for instant use. On a square sail this is accomplished with leech and clew lines. See 'Scandalize'
A diamond penetrator, conical in shape, used with a Rockwell hardness tester for hard metals.
A diamond penetrator of specified sphero-conical shape used with a Rockwell hardness tester for hardmetals. This penetrator is used for the A, C, D and N scales. 
a brand of conoidal diamond or diamond-pointed tool, having convexly curved sides meeting at an angle of 120°, used as an indenter in testing the hardness of metals.
A diamond penetrator, conical in shape, used with a Rockwell hardness tester for hard metals.