Dab tsi yog qhov engineer's square muaj?

Stoke
	Nyob rau feem ntau engineering squares, cov Tshuag yog luv luv, thicker ib feem ntawm lub cuab tam, tso cai rau lub engineering square zaum unaided ntawm ib tug tiaj tus nto nrog cov hniav nyob rau hauv ib tug ntsug txoj hauj lwm, tso cov neeg siv tes. Cov khoom lag luam tseem tso cai rau tus neeg siv tso cov cuab yeej tawm tsam ntawm ntug ntawm lub workpiece thiab siv cov hniav ua cov lus qhia rau cov kab ntawm txoj cai kaum rau ntawm ntug ntawm lub workpiece.
Cov hniav
	Nyob rau feem ntau engineering squares, cov hniav yog qhov ntev, thinner ib feem ntawm cov cuab yeej. Cov hniav yog ntxig rau hauv qhov kawg ntawm cov Tshuag, nrog rau sab ntug ntawm cov hniav protruding los ntawm qhov kawg ntawm cov Tshuag. Ntawm sapper squares uas tsis muaj Tshuag, cov hniav yog thicker. Sab hauv ntug ntawm tus engineer's square hniav tuaj yeem yog 50 hli (2 hauv) txog 1000 hli (40 hauv) ntev.
zawj
	Ib tug zawj los yog notch yog ib lub voj voog ib nrab txiav los ntawm cov Tshuag los yog cov hniav ntawm qhov chaw uas lawv cov npoo sib ntsib. Qhov zawj tiv thaiv cov chips, av lossis xuab zeb los ntawm qhov nruab nrab ntawm square thiab workpiece ntawm qhov tseem ceeb no. Los ntawm kev tiv thaiv qhov no, qhov zawj pab txo qhov kev pheej hmoo ntawm qhov tsis raug thaum kuaj xyuas lub workpiece squareness. Qhov zawj kuj tseem pab tiv thaiv qhov ntsuas tsis raug ntawm lub kaum sab xis ntawm cov hlau ua haujlwm yog tias muaj burr ntawm nws ntug.
Ntxiv nta
	Beveled ntug Beveled npoo tsuas pom nyob rau hauv engineering squares uas tsis muaj cov khoom lag luam. Vim hais tias cov hniav ntawm cov engineered squares yog thicker, lub bevelled ntug pab txo qhov kev sib cuag thaj chaw (qhov chaw ntawm lub workpiece nyob rau hauv kev sib cuag nrog lub cuab tam), tso cai rau tus neeg siv mus visually xyuas tej lub teeb ntawm lub ntug kom sai thiab meej. workpiece thiab hniav ntug txiav txim seb lub workpiece yog square.
	Lub beveled ntug yog lub ntsej muag uas nyob ntawm lub kaum sab xis rau lwm sab, tsis yog square (ntawm txoj cai kaum) rau lawv.
	Cov qhab nia kawm tiav Cov qhab nia kawm tiav yog cov qhab nia ntsuas, feem ntau muab tso rau ntawm cov hniav ntawm ib qho kev tsim vaj tsev. Lawv tso cai rau koj ntsuas qhov ntev ntawm txoj kab uas koj xav kos rau ntawm koj lub workpiece yam tsis muaj tus kav. Cov qhab nia kawm tiav yog qhov muaj txiaj ntsig zoo vim tias sim tuav tus engineer lub square thiab straightedge raws nraim nyob rau hauv qhov chaw thaum kos ib kab ntawm lub workpiece tuaj yeem yog ib qho kev sib tw.
	Cov qhab nia kawm tiav muaj ntau dua ntawm engineering squares uas tsis muaj Tshuag. Lawv tuaj yeem yog imperial lossis metric, thiab qee qhov squares yuav muaj kev kawm tiav imperial ntawm ib ntug thiab ib qho metric ntawm lwm qhov.
	Ko taw Cov ceg lossis sawv ntsug yog ib qho ntawm qee qhov kev tsim vaj tsev squares uas tsis muaj cov khoom lag luam. Cov ko taw pab lub square sawv ntsug thaum kuaj xyuas qhov squareness ntawm workpiece.