Engineer's Theodolite with Micrometer Reading

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K1-M reliable Applications Digital The K1-Mis particularlywell suited for ano Gonvenlent landsurvey and engineering measure- GircleReading Simple,digital micrometer circle read- ments,where the accuracyof angular The horizontaland verticalcircle ing, automaticvenical indexing and measurementsto tenthsof a minuteis imagesappear simulta neously in exceplionallybright and largecirele sufficient.The wide rangeof acces- the circlereading eyepiece. The readingimages are the specialadvan- soriesextends its field of aoolication. circlesand the micrometerare tagesof the engineer'stheodolite K1-M. Fourthorder triangulation comDletelvnumeric which war- The instrumenlalso features a repe- Cadastralsurveys: traversing, detail rantsfor rapidand accurateworkv tition clampand an opticalplummet. surveyand layout work with the DM 502 With the commonmicrometer, The possibilityol combiningthe K1-M Compasstraverses both circlesorovide direct read- with the electro-oDticaldistance meter Topographicalsurveys ingsto 6"/2 mgonand estimates DM 502 considerablyexpands its Obtainingof datafor constructionand to 3"/1 mgon. alreadywide lield of application. crvl engrneenngprojects The K1-M meetsall practicaldemands, All typesof layoutwork madeon a moderninstrument in terms Cadastralsurveys for utilitylines of accuracy,measuring reliability and convenienceof oDeration.lt has,further- more,undergone strict tests, such as thoseincluded in militaryspecifications (functionalreliability over a wide tem- peralurerange, under wet and dusty conditions.in caseof shockand impact, etc.).The userthus hasa guarantee thar the K1-M will continueto oDelate accuratelyand reliablyunder unfavour- ableand difficultconditions.

presented by: Virtual Archive of WILD Heerbrugg www.wild-heerbrugg.com Above:circle reading 360" Venical86" 51'15" Ball Bearing Telescope Left:circle reading 400 gon The powerful telescooewith its 30 x Horizontal381.278 gon Vertical Axis magnificationpossesses exemplary A precisionball bearing,of the type opticalcorrection and producesa sharp, uprightimage. All opticalcomponents havean anti-reflectioncoating on both RepetitionG|amp tä[{:! *,lj{t:,#ldi,Ti;" sides.The telescooe is fittedwith the The repetition clamping device is used gives an excellentaxis stabilityat a universalreticule, for circle orientationand for the additive low instrument height. The knob of the focusingdrive includes measurementof small angles,such as a built-inmechanical reduction gear. occur duringindirect dislance measure- Approximationof the sharpimage is rapidlyobtained with the coarseadjust- iHt:T:iJ'HJ::liljß?iI"""o,,,u"" Pendulum ment,while the subsequentbackward movementautomatically brings in the :",i:lL%iiH:i.'"X""T,?[:.';ä';:"'j","oGompensatorfine adjustmechanism for exact directlyby meansof directionalangles. In placeof the manuallyadjusted col- focusing. limationlevel, the K1-M hasa pendulum compensator.It automatically eliminatesthe influenceof inclination of the verticalaxis in verticalangle measurements. The low-frictionmounting of the pen- dulumon precisionball bearings is capableof meetingthe mostrigorous requirements;it hasproved its reliability in tensof thousandsof theodolitesand levelinginstruments. The effectiveair dampingpermits unimpeded reading evenin the caseof vibrations. The compensatorforms a comDactunit with the two circlereading devices, the adjustmentof which is thereforeper- fectlvretained.

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**3J ,'i! -lY{.:. {t. Centering Tripod Elbow Eyepieces "- **i ;';54*3 The well-known Kerncentering tripod Elbow eyepiecesallow very steep and / makesthe settingup ol the instrument verticalsightings. Thus, the K1-M can I an unbelievablysimple and rapidoper also be usedas a plummetwhich is a ation.Since the telescopiccentering welcomeexpansion of its caDabilities. rod is joined at right anglesto the instrumentsupport plate,coarse leveling is obtainedautomatically and simul =.d' taneouslywith the millimetre-accurate centering.Fractions of a rotation on the leveling knobs on the lower part of the instrumentare sufficient for fine leveling. The joint system of the tripod head is protectedagainst dust and humidity. It is precision-engineeredfor smooth operation.Dirty tripod heads can be cleanedconveniently and without disassembly.An automatic interlock Optical Plummet devicesnaps the lockinglever shut --e when an instrumentor an accessory K1-M is fittedwith an optical (reflector,target, or rod foot) is placed :: Jmmet,the focusingrange of which on the tripod.The instrumentor acces- , .:endsfrom 0.7 m to infinity.Accurate sory is thus securedand the locking ="teringis thus possibleover raised levercan be lightened. r' 'ecessedpoints without the needfor :-:Ctional equipment. ForcedCentering The centeringtripod affords decisive advantagesin measuremen ts requiring forced centering:all Kern instruments and accessoriesare interchangeable on the variousKern centering tripods by meansof a slmplemanual operation, without the centering being lost.

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,,'fr* Girclelllumination K1-M Gompass Combination lf insufficientlight is available,the readingfields are illuminated with the Theodolite with the DM 502 lightingfixture (at left) or with the Dueto its non-magneticconstruction, The KernDM 502 electro-oDtical diodelighting device " Lux-Timer"(at the K1-Mis exceptionallysuitable for distancemeter can be combinednot right).The lightingfixture is powered compasssurveys. The azimuthof the only with the DKlVl2-Aone second by a smallbattery attached to the lineof sightcan be takendirectly from theodoliteor with the scaletheodolite tripodleg or by the batteryof the the circularcomoass. K1-Sbut alsowith the K1-M.The electro-oDticaldistance meter. The horizontalcircle can be oriented distancemeasuring part " can be slipped The Lux-Timer"has a built-in towardsthe Northwith the tubular on to the telescopeand locked.This replaceable9V battery.lt is switched compass. idealinstrument combination Dermits on by depressinga buttonand will simultaneousmeasurements of anqles illuminatethe readingfields for about and distances,such as arerequireä for 20 seconds. cadaslralsurveys according to the polarmethod or in lavoutwork on the constructionsite. Evenwith the attached DM 502,the telescopeof the theodolite can be plungedover both ends.The powersupply passes from the supply unit on the tripodto the centralillu- minationconnector on the lowerDart of the theodolite.The alidadethus remainsfreely rotatable and its oper- ationis not impededby cables.(Further informationon the DM 502 arecon- tainedin brochurenumber 145.)

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presented by: Virtual Archive of WILD Heerbrugg www.wild-heerbrugg.com Kern g Co. Ltd. Mechanical,Optical and Electronic ern PrecisionInstruments swlss CH-500'l Aarau. Switzerland Telephone(064) 251111 TelegramKern Aarau Telex68106

Technical Specif ications Ordering Data We reservethe right Telescopemagnif ication 30 x Engineer'stheodolite K1-M 400 gon to makechanges in keepingwith Obiectiveaperture 1.8 in. (45 mm) or 360', with uprighttelescope image technical '117e developments. Shortestfocusingdistance 5.1 ft. (1.5m) The instrumentsare supplied in a metal 2.80.RTPrinted in Switzerland Diameterof fieldof view at1000ft. (1km) carryingcase with adiustingtools 26 ft. (26 m) Accessories Multiplicationconstant 1 00 Centeringtripod No. 1925with Addition constant0 telescopicmetal legs Diameterof horizontalcircle Centeringtripod No.1915 with 3.5 in. (89 mm) telescopicwooden legs Diameterof vertical circle Electricallighring consisting of: 2.8 in. (70 mm) batterycase, lighting fixture and Circlareading, direct 6"/2 mgon mirrorfor reticuleillumination Circle reading,by estimation3"fl mgon Diodecircle ilIumination system Sensirivityof alidadelevel 30"/2 mm " Lux-Timer"with built-in exchangeable Centeringrange of compensator I V battery +2O'/O.4 gon Eyepieceprisms Centeringaccuracy of compensator Eyepiecefilter 3" 11 mgon Elbow eyepieces Focusingrange of optical plummet Gaussautocollimation eyepiece 2.3 ft. (0.7 m) to o" Pentagonalprism attachment90" Heightof horizontalaxis Optical micrometer 6.7 in. (171mm) Lens protectioncap Weightof inst.ument10.2 lbs. (4.6 kg) Rubbersunshade tube Weightof carryingcase 5.3 lbs.(2.4 kg) Tubularcomoass Dimensionsof carryingcase Circularcomfass 11.8x6.3 x8.3 in. (30x16x21cm) Telescopelevel with coincidenceprisms Plumbbob with plumbline plug Electro-oDticaldistänce meter DM 502 Optical roof and ground plummet Extensiontube for centeringrod Manufacturing Program of the centeringtripod For morethan 160 vearsKern has Traversingequipment Pl consistingof: manufacturedsurveying instruments 2 targetsin metalcarrying case and and drawingequipment that have 2 centeringtripods No.1925 or No.1915 an outstandingreputation in all parts Invarsubtense bar lB ol the world. Centeringplate The presentmanufacturing program Fungicidecompound includes: Shouldercarrying strap L€vels Transportrucksack Thoodolites Packrack Canvasbag for tripod Paddedshipping case

equipment World-wide Kern Service The proverbialreliability of Ke.n instrumentsis ensuredby the dependable F serviceoffered bv our

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