surveying tabletThe priceTrustworthy businessRangefinderrelatedknowledge,ultrasonicrangingisthroughcontinuousdetectionofultrasonicreflectionechoencounteredobstacles,afterlaunchingtodetermineintransmittingandreceivingtheechotimet,andthenfindoutfromS=Ct/2,Cfortheultrasonicwavevelocityintype. Becauseultrasoundisalsoakindofsoundwaves,thesoundvelocityCisassociatedwithtemperature,severalkindsofsoundvelocityunderdifferenttemperature.Whenuse,ifthetemperaturechangeisnotbig,thevelocityofsoundcanbethoughtofasbasicsame.

itsroleistobeabletomeasuretheAngleofthedigitaldisplay,andtheAngledataforstorage,atthesametimeautomaticreductionofthedistancebetweentwopoints. ElectronictheodoliteasanaccuratemeasurementofAngleanddistancereductionofprecisioninstruments.Atpresent,theAngleanddistanceoftheprojectiswidelyusedinmeasurement,andplayanimportantrole.So,electronictheodolitewhendistancemeasurementsshouldbehowtouse?

Dialengravedwiththedistanceofthelightandshade,thedistanceandthewidthofthevisualdesignrequest.DialwithapertureonLR,LS,apertureequippedwithlightemittingdiodetogenerateelectricity. Whendialturns,fixedapertureofphotoelectricdiodetoacceptfromtheledsarealightsignal,signallightandshadeafewwillbeamarkofthedialsizerotation.

Byusingtheprincipleofthegyrodirectionalagileindependentmeasurementpointorientationofgyroscopictheodoliteandlasertheodoliteonthefloor;Transit,transitandzenithtelescopetheeffectofthreekindsofuniversaltheodoliteforgeographyobservation; Pullopenmicwiththeodolitetocontactforthegroundmeasurementusingtheodolitefilming,etc.

Accordingtostatistics,everyyearfromforeignimportsofadvancedinstrumentsandequipmentworthnearlysixhundredbillionyuan,withhigh-endtechnologyoforrelatingtothe**safetyequipmentprohibitedtoentertheChinesemainland, accordingtostatistics,everyyearadvancedinstrumentsandequipmentimportedfromabroadisworthnearlysixhundredbillionyuan,

Aboutmeasuringinstrumentintheearliestisancestorswehaveusedtheworkmeasuredwithsomesimpletoolssuchas:theancientastronomersusingcrossscaletomeasurethedimensionofstars, itensivelyusedinMarineindustrytothestar.Alongwithtimechangemeasuringinstrumentisbecomingmoreandmoreadvanced.Isbecomingmoreandmoreaccuratemeasurementresults.Thenseveralmeasuringinstrumentsofthemainclassificationhave?