The United StatesGNSS STATIONThe priceTrustworthy enterpriseMeasurement,putonatripod,theodolitewithpendantoropticalplummetaimtheinstrumentcentersitemeasurementontheground,withalevelinstrumentisflat,aimtomeasurewithatelescope,pingdudishwithwaterandverticalscalehorizontalAngleandverticalAngle. Accordingtothedividedintoprecisiontheodoliteandordinarytheodoliteprecision;Accordingtothereadingdevicecanbedividedintoopticaltheodoliteandcursortheodolite;Accordingtotheshaftingstructure

Mainsectionistriangularprism.Prismhastworefractor,theycalledvertexAngle,AngleofdipAngleontheplaneforthebottom. Accordingtothelawofrefractionoflightthroughaprism,thetwotowardthebottombending,emergentlightandincidentlightAngleqiscalledtheslantAngle. ItssizeisdecidedbytherefractiveindexnandincidentAngleofprismmediumI,whenIfixed,differentwavelengthsoflighthavedifferentbendingAngle,bendingAngleisbiginthevisiblelightpurplelight,smallredlight.

Theriseandfallofcentercolumnforfine-tuninganduseonly,asfaraspossibleavoidtohigh,toprevent"top-heavy".Beforefilmingshouldalsocheckeachpartoflockingdevices,makeitsfastening,avoidshaking.

tightenthescrewconnection. Jingping:rotatingscrewfeet,makethetubelevelbubbleinthemiddle. 4,targeting,andreading: (1)theeyepiecelight:eyepiecelenstomakethecrosshairisclear. (2)theaimandobjective:lightcrudeatgoal,thefocusoftheobjectivemakecleargoals.Payattentiontoeliminatetheparallax.Aimingattarget. Reading:adjustthelightingreflector,thereadingwindowbrightnessmoderate,rotatingreadingmicroscopeeyepiecetoscorelineisclear,andreading.

Instarsisfarawayfromus,eyescouldn'tdistinguishbetweentherealaloneisnotthesameasthedistancebetweenthem, soinouropiniontheseplanetsareasthesame.Let'simagineadanglingofsphericalshellcoverthewholeoftheearth,theideaoftheballiscalledthecelestialsphere(Celestialsphere), butthesestarsarefixedinthesphericalshellinside,everytimewecanonlyseehalfofthesphere.Asaresultoftheearth'srotation,

Totherotationofthemanipulationofthesightingdepartmennhehizontalplane,equippedwiththesightingofthebrakescrewandmicrospiral.Sightingofthepartshaveatelescope,verticalreadingsshoweumirrors, theyareallinstrumentsonthehorizontalaxisofcanchangeintheverticalplane.Inordertochangepositionofthemanipulationofthetelescope,thebrakescrewandmicrospiralisequippedwithatelescope.Inthefuture,

thecrosshairmostclearly.Accordingtoloosenthefixedscrew,rotatethetelescope,makedoorsandinteriorconnectiononthelevelruler,tightenthefixedscrew.Finallyturnthelightoftheobjectivespiral, makethelevelrulerclearlyonthecrosshairplane,toturnthemicroscrew,makelevelrulerlikeonthecrossononesideoftheverticalwire.

Measuringinstrumentisakindofcoordinatemeasuringmachine,wasconductedbyusingopticalmicroscopetomeasureobjectsfreeratioamplifierimaging,aCCDcamerasystem, toenlargetheimageobjecttobetestedafterthetransmissiontothecomputersconnectedtotheinstrument,usedtodetectnon-contact,highefficiencyofequipmentofallkindsofcomplexworkpiecegeometry.