• of Jewel
Found on
http://thinkexist.com/dictionary/meaning/jewelling/
Term that refers to the use of hard gemstones as bearings in watches or clocks to reduce the wear and deterioration in timekeeping caused by the pivots of cog spindles in their pivot holes.
Found on
http://www.antique-marks.com/antique-terms-j.html
Term that refers to the use of hard gemstones (usually synthetic rubies or diamonds) as bearings in watches or clocks to reduce the wear (and hence deterioration in timekeeping) caused by the pivots of cog spindles in their pivot holes. Jewelling was first patented in London in 1704, and was a jealously guarded secret among British makers well into …...
Found on
http://www.encyclo.co.uk/visitor-contributions.php
No exact match found.
