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SURVEYING INSTRUMENTThe good faith for this

作者: Deruite Industry 發布時間: 2019-07-14 00:27:59

SURVEYING INSTRUMENTThe good faith for thisTheodoliteisakindofAnglemeasuringinstrument,itisequippedwithatelescope,thehorizontalcircleandreadingsoftheindex,theverticalscaleandindexofreading. Theodoliteiswestsen(Sisson)bythemechanicaboutfirstdevelopedin1730,afterformingtheimprovement,theformalusedinBritishgeodesy. In1904,Germanybegantoproduceglassdialtheodolite.Withthedevelopmentofelectronictechnology,the60selectronictheodolite.Onthisbasis,the70smadetheelectronicmeasuringinstrument.

lookatthemeasurementsonthesamepositionofobjects,needlewithandwithoutdeviationdegree.

Ranger'svelocitymeasuringdistancemeasurementisdonebyopticalmethods,wecallthiskindofmeasuringinstrument;Opticalmeasuring. Infact,opticalmeasuringinstrument;Isreferstothetheodolitewithstadiahairs,bymeasuringpointoftheplanepositiondeterminedbythedirectionofmeasurementandopticalsights,andelevationisusingtriangulationmethodtodetermine.

inastronomy,theappropriateontheearth(the)degrees,thencalledthedeclination(ascension).Fromthecelestialpoletothecelestialequator,declinationisdividedinto90°; Andrightascensionisdividedinto24,1and60points,namely1h=60m=15°,thisisbecausetheearthorthecelestialperhour15°rotatingthename.Theazimuthresolution,appropriatelookcluttered,

OninspectiontabletUSES:applicabletoallkindsofinspectionwork,precisionmeasuringdatumplane,mechanicalmeasurementbenchmarkformachinetools,checkthesizeprecisionofpartsorformadeviation, andprecisionmarking.Inthemechanicalmanufacturingisalsoanindispensablebasictools.Material:materialofhighstrengthcastironHT200-250workingfacehardnessofHB160-210.Aftertwoprocessing(artificialannealing600?

Secondgeneralalsoneedtolookatwhenbuyingmeasuringinstrumentitsinspectiondate,seeifthefileiscomplete, whenchoosingmeasureforgeneralisbasedonthedetectionofthesizeofworkpiecetodetermine,becausesmallstrokecannotmeasure,butthelargetravelequipmentabovethepricewillbehigheragain, sobeintegratedtheactualsituationandlong-termdevelopmenttoselectmeasuringinstrument.

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