High qualityDATA RADIO FOR SOUTH RTKmonopolyMore please consultitwillmakeyourequipmentefficiencyisgreatlyreduced,sceneryphotographyinpursuitofthedepthoffield,apertureoftenneedtof/11evensmaller,sothatwhenthelightisabitpoor,especiallyforlandscapephotographycommonlyusedinthetelephotolenses,withoutatripod,isbeingdisqualifiedfromthecontest. Eveninthesunnylightconditions,alsonotusealensfocallengthofreciprocalvalueabovetheshuttertime,canguaranteethesharpnessofthehandheldphotography.

Tianchi(sea)ontheundersideofdrawhasaredline,knownasthebottomline,onthenorthsidetherearetworeddots,usedtomakereferstothenortherntipofneedleandbottomline. Moderncompasswithreticle,atthebottomofthetopofthegraticule,respectively,withthesoutheastnorthwest,whenusing,shouldmakereferstothenortherntipoftheneedlepointstothebottomoftheseaatthenorthernendofthereticle,andmakestheneedletothebottomoftheseathenorth-southline.

Second,thedetectionprecisionmeasuringtoolhavenotnormalphenomenon,suchasmeasuringtoolsurfaceuneven,burr,rustyspotandinaccuratecalibration,feetandnotflexiblebendingdeformation, activity,etc.,shouldnotbetheuser'sownrepairing,doesnotallowtousehammerknock,filefile,emerycloth,polishingroughwaytorepair,toavoidincreasingthemeasuringerror.Foundthattheabovesituation,

Eight,marblemeasuringtoolmeasuringtoolmeasuringtool,notasasubstituteforothertools.Forexampleandverniercaliper, anddialgaugewhenthehammer,withsteelrulerasrotaryscrewdriver,andwithasteelrulerclearscrapsarewrong.Toys, suchasthemeasuringtoolwhentakeinthehandsofthedialgaugeandarbitrarywaveorrocking-turniswrong,iseasytolosemeasuringprecision.

Nine,temperaturehadagreatinfluenceonthemeasuredresults,partsoftheprecisionmeasurementtomakepartsandmeasuringtoolat20℃undertheconditionofmeasurements. Cangenerallybemeasuredatroomtemperature,butthetemperatureoftheworkpieceandthemeasuringtoolisconsistent,otherwise,duetothecharacteristicsofmetalmaterialsheatbilgescoldshrink,

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

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

hadbetterchoosedirectmeasurementmethod,specialcircumstanceswillchooseindirectmeasurement. Followedbycontactmeasurementandnon-contactmeasurement,respectively,thetwomethodsofmeasuringitisobviousfromthenameabovecandetermineitsdifference, non-contactmeasurementofnatureisnottoneedtocontacttheproductsurfacemeasurement,generallyUSESa3dmeasuringinstrument,