Difference between revisions of "Topping lift"
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[[ | [[Category:IALA Dictionary 1970-89 Edition]] |
Revision as of 12:47, 15 February 2009
8-3-040
The tackle which takes the weight of a derrick and its load and controls the angle of elevation of the derrick.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)