Bowo lamkati lakunja lozungulira mpira ndi bowo lokhala ndi 1:12 taper, lomwe limatha kukhazikitsidwa mwachindunji pamtengo wa taper, kapena mothandizidwa ndi bushing lokhazikika lomwe limayikidwa pa shaft ya axleless optical, ndipo imatha kusintha chilolezo. .
Ndi mtundu wamtundu wonyamulira womwe umaphatikizira kupiringa ndi kunyamula pedestal.Zambiri zomwe zimagubuduza ndizomwe zimakhala pakati pa mphete yakunja ya chigawocho, ndipo ndi dzenje lamkati lamkati la nyumba yosungiramo zinthu zomwe zimayikidwa palimodzi, mawonekedwe apangidwe ndi osiyanasiyana, chilengedwe chonse komanso kusinthana kwabwino.