1. kev siab gauges nrog Bourdon raj yog ib yam cross-sectional zoo (ob leeg muaj ca, round thiab oval), bent mus rau tus puab "no", thiab muaj raws li tej lub elasticityof springs uas muaj zoo li tus raj rau. Yog lub caij nplooj ntoos hlav tseem tsawg heev, nws yuav cuam tshuam raug qhov siab tag huv tibsi.
2. tshaj permissible yuam kev ntawm cov se siab tag huv tibsi, koj yuav tsum tau kho tus nqi haum ntsia thawv li muaj raws li qhia, yog cov lus tsis muaj ib tus nqi haum ntsia hlau, cov lus no tsuas nyob kom muaj feem.
3. tag huv tibsi siab, hu xovtooj thiab cim yuav tsum tiav thiab tseeb. DIAL indexing tus pas ntsuas yuav tsum tusyees faib thiab lub Central kaum sab xis ntawm 270 °, cov pointer uas siab tag huv tibsi yuav tsum muab tso rau hauv tag nrho cov kab tsis pub dhau lub pointer ntawd hais luv dav kawg lawm yuav tsum tsis tau ntau dua cov teeb 1/5 yam tsawg kawg nkaus. Pointer indexing phaj kev ncua deb ntawm lub dav hlau yuav tsum nyob rau hauv lub 1 ~ 3 mm yog nab od 200 hli (nrog rau 200 lub hli), qhov kev ncua deb ntawm pointer thiab indexing phaj ca yuav tsum nyob rau hauv lub 2 ~ 4 hli ntau yam.
4. Tus koob qhia hais tias siab nrog lub tsheb nawj, tsis muaj siab los yog nqus pointer ze ntawm koob, "muaj ntawv cog lus" yuav tsum tsis pub tshaj qhov ntev raws kam rau ua.
5. siab koob qhia hais tias yuav pab tiv thaiv cov nrog qhov chaw ntawm lub rooj sib hais againstpollution, lub siab koob qhia hais tias yuav tsum nruab nrog qhov ruaj ntseg, ruaj ntseg zoo li tus d. plua plav tau ntaus yog yuav tsum tau txhaj.
6. cov siab tag huv tibsi no mus saib cov qauv ntawm rationality, selectedmaterials, cov laus ntawm lub Cheebtsam hauv, xws li mus sij hawm ntev stability zuag qhia tag nrho.
