Chigadzirwa tsananguro:
Injini huru ine mbiri uprights, maviri lead screws, uye pasi silinda. Iyo nzvimbo yekumisikidza iri pamusoro peinjini huru, uye iyo yekumanikidza uye yekukotama bvunzo nzvimbo iri pakati pepasi danda reinjini huru uye bhenji rekushanda. Iyo simba yekuyeresa chiridzwa inotora yakakwirira-tsanangudzo yemvura yekristaro kuratidzwa, uye iyo data yekuyedza iri nyore uye intuitive.