A purchase is a mechanical device by means of which an applied pull or force is increased; it may be a system of levers, a system of revolving drums or wheels geared to one another, or a combination of blocks or pulleys rove with rope or chain.
Intengo sisixhobo somatshini secebo elixela ukuba ukongeza utsalo okanye amandla luyenyuka, isokuba lulungiso ngendlela emisiweyo yesi sixhathisi sokunqanda, ulungiso ngendlela emisiweyo yojikeiezo lwamagubu okanye amavili agiya kwenye ukuya kwenye okanye umxube wothintelo okanye utsalo lwezibhadula ngentambo okanye ityathanga.