नतिमापी
200px|thumb|right natimapi (aangrezi: Inclinometer or Clinometer) ek upakaran hai jisaki sahayata se gurutv ke sapeksh kisi vastu ka jhukav (nati) mapa jata hai. ise 'tilt mitar', 'tilt iandiketar', 'slop gej', 'pravanata mapi' adi bhi kahate haian. natimapi ke dvara dhanatmak tatha rrinatmak donoan natiyaan mapi ja sakati haian.[1]
parichay
poornat: mukt roop se lataka hua chuanbak, kshitij se jo kon banata hai use prekshanasthal ki 'nati' ya 'chuanbakiy dip' kahate haian. doosare shabdoan mean, chuanbakiy sadish (magnetic vector) aur kshaitij samatal ke bich ke kon ko 'dip' ya 'nati' kahate haian. dip ya nati ka nirdharan karane ke lie jis upakaran ka prayog kiya jata hai use natimapi kahate haian. natimapi ek patali, kilit, yantrasantulit, aur kshaitij dharukoan (bearings) par chadhi huee saral suee haian. jab upakaran ke ghoornan ka samatal chuanbakiy yamyottar mean ho, tab suee us sthan ki parinami chuanbakiy kshetr ki disha mean sthir ho jati hai aur ek oordhvadhar vrittakar mapani ka dip ka kon ya nati ka sanket karati hai. khan sarvekshan mean chuanbakiy padarthoan ki pahachan ke lie is saral upakaran ka atyadhik prayog kiya jata hai.[1]
yantr ka prayog
is yantr se prithvi ke chuanbakiy kshetr ki kshitij se nati tatha kul bal napa ja sakata hai. chuanbakiy padarthoan ki pahachan ke lie is saral upakaran ka atyadhik prayog kiya jata hai.
yantr ki sanrachana
prayogashalaoan mean kam anevale kyoo (Kew) paitarn ke dipavrittoan mean patale ispat ka ek chuanbak hota hai, jisake sath gomed (agate) kshuradharoan (knief edges) par tike hue ek sookshm ispat ki dhuri ki vyavastha hoti hai. yah do upayukt tekoan par tika rahata hai jinhean choo didar sire ki sahayata se uthaya ya giraya ja sakata hai.
nati ya dip ki ganana
upakaran ka prayog karane ke pahale avashyak sanmajanoan ke dvara dhuri ko vrittakar mapani ke keandr par lana chahie. upakaran ke kalevar ko oordhvadhar aksh ke charoan or ghumaya ja sakata hai aur adhar par sthit kshaitij vrittakar mapani par usaka digansh (azimuth) padha ja sakata hai. sarvapratham dipavritt ko samatal karate haian aur phir use itana ghumate haian ki suee poornat: oordhvadhar (oordhvadhar aksh par pathan 90° - 90° ) ho jae. yah samatal spasht hi chuanbakiy yamyottar par lanbavath hota hai. ab is upakaran ke adhar par sthit kshaitij mapani ke sanketanusar 90° ghoornit karate haian. is prakar suee ka ghoornanatal chuanbakiy yamyottar mean laya jata hai. is avastha mean oordhvadhar mapani par suee ka pathan (suee aur kshitij ke bich ka kon) us sthan ki vastavik nati ya dip hai. ek set (set) prekshan ki avadhi mean yaantrik asantulan ke avashisht prabhav ko kam karane ke lie chuanbakiy suee ke chuanbakan ki disha ko kritrim riti se anek bar prativartit (reversed) karate haian, aur oordhvadhar vritt par sthapit varniyar paimane se yukt sookshmadarshiyoan dvara suee ke donoan siroan ko padhate haian.[1]
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