Mohala oa phetiso o amohelaangle tšepe tora, 'me karolo e kholo e amohela angletora ea tšepe ea tšepe, e leng sebopeho sa ts'ehetso sa mohala oa phetisetso ea holimo 'me o tšehetsa mokhanni le terata ea fatše. E etsa bonnete ba hore mokhanni o finyella litlhoko tsa sebaka se hōle ho tloha fatše le lintho, 'me a ka mamella mojaro oa mokhanni, terata ea fatše le tora ka boeona, hammoho le meroalo e ka ntle.Angle tšepe, eo ka tloaelo e tsejoang e le angle iron, ke tšepe e telele e nang le mahlakore a mabeli a etsang likhutlo tse nepahetseng. Ho na le tšepe ea mahlakoreng a equilateral le tšepe e sa lekanang.Equilateral angles na le bophara bo lekanang ka mahlakoreng a mabeli. Litlhaloso tsa eona li hlahisoa ka litekanyo tsa mm tsa bophara × bophara × botenya. Ka mohlala, "∟30 × 30 × 3" e bolela tšepe ea mahlakoreng a lekanang le bophara ba 30 mm le botenya ba 3 mm. E ka boela ea hlalosoa ka mohlala, ke hore, bophara, ka lisenthimithara, joalo ka ∟3#. Nomoro ea mohlala ha e emele litekanyo tsa botenya bo fapaneng ka har'a mohlala o le mong, kahoo bophara le boholo ba litekanyo tsa tšepe ea angle li hloka ho tlatsoa ka likonteraka le litokomane tse ling ho qoba ho sebelisa nomoro ea mohlala feela. Litlhaloso tsa tšepe e chesang e pota-potileng equilateral angle ke 2 # -20 #. Angle steel e ka bokelloa ka likarolo tse fapaneng tse jereng khatello ea maikutlo ho latela litlhoko tse fapaneng tsa sebopeho, hape e ka sebelisoa e le karolo e kopanyang lipakeng tsa likarolo.

Tsebo ea mantlha le litlhoko tsa tekheniki bakeng saphetiso line angle tšepe toralitšoantšo li kenyelletsa lintlha tse ngata tse kang khetho ea thepa, boholo ba likarolo, moralo oa khokahanyo, litlhoko tsa kaho, le ho lokisetsa litšoantšo. Likahare tsa litšoantšo li kenyelletsa litšoantšo tse akaretsang le litšoantšo tsa sebopeho. Setšoantšo sa sebopeho se lokela ho aroloa ka likarolo tse kang masakaneng, matsoho a sefapano, 'mele oa tora le maoto a tora. Litšoantšong tsa meralo, ntle le likarolo tse tloaelehileng tse kangliboutu, li-flanges, li-clamping plates, lithapo tsa maoto le li-washer, likarolo tsohle li lokela ho baloa.