Engineer's Theodolite with Micrometer DEFINITIVAS/imagenes reducida · ern sw/ss Engineer's Theodolite…

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    Engineer's Theodolitewith Micrometer Reading

    presented by: Virtual Archive of WILD Heerbrugg

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    K1-M reliable Applications Digital

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    ano GonvenlentSimple, digital micrometer circle read-ing, automatic venical indexing andexceplionally bright and large cirelereading images are the special advan-tages of the engineer's theodolite K1-M.The instrumenl also features a repe-tition clamp and an optical plummet.The possibility ol combining the K1-Mwith the electro-oDtical distance meterDM 502 considerably expands itsalready wide lield of application.The K1-M meets all practical demands,made on a modern instrument in termsof accuracy, measuring reliability andconvenience of oDeration. lt has, further-more, undergone strict tests, such asthose included in military specifications(functional reliability over a wide tem-peralure range, under wet and dustyconditions. in case of shock and impact,etc.). The user thus has a guaranteethar the K1-M will continue to oDelateaccurately and reliably under unfavour-able and difficult conditions.

    The K1-M is par t icu lar ly wel l su i ted forland survey and engineer ing measure-ments, where the accuracy of angularmeasurements to tenths of a minute issufficient. The wide range of acces-sories extends its field of aoolication.Fourth order triangulationCadastral surveys: traversing, detailsurvey and layout work with the DM 502Compass traversesTopographical surveysObtaining of data for construction andcrvl engrneenng projectsAll types of layout workCadastral surveys for util ity lines

    Gircle ReadingThe horizontal and vertical circleimages appear s imul ta neously inthe circle reading eyepiece. Thecircles and the micrometer arecomDletelv numeric which war-rants for rapid and accurate workvWith the common micrometer,both circles orovide direct read-ings to 6"/2 mgon and estimatesto 3"/1 mgon.

    presented by: Virtual Archive of WILD Heerbrugg

  • Above: circle reading 360"Venical 86" 51 '15"Left: circle reading 400 gonHor izonta l 381.278 gon

    directly by means of directional angles.

    Ball Bearing TelescopeVertical Axis The powerf ul telescooe with its 30 xmagnification possesses exemplary

    optical correction and produces a sharp,upright image. All optical componentshave an ant i - re f lect ion coat ing on bothsides. The telescooe is fitted with theuniversal reticule,The knob of the focusing drive includesa bui l t - in mechanical reduct ion gear .Approximat ion of the sharp image israpidly obtained with the coarse adjust-ment, while the subsequent backwardmovement automatically brings in thefine adjust mechanism for exactfocusing.

    A precision ball bearing, of the type

    Repetition G|amp t[{:! *,lj{t:,#ldi,Ti;"The repetit ion clamping device is used gives an excellent axis stabil ity at afor circle orientation and for the additive low instrument height.measurement of small angles, such asoccur dur ing ind i rec t d is lance measure-

    iHt:T:iJ'HJ::lilj ?iI""" o,,,u"" Pendulum:",i:lL%iiH:i.'"X""T,?[:.';';:"'j","oGompensator

    In place of the manually adjusted col-l imat ion level , the K1-M has a pendu-lum compensator. It automaticallyeliminates the influence of inclinationof the vertical axis in vertical anglemeasurements.The low-friction mounting of the pen-dulum on precision ball bearings iscapable of meeting the most rigorousrequirements; it has proved its reliabilityin tens of thousands of theodolites andleveling instruments. The effective airdamping permits unimpeded readingeven in the case of vibrations.The compensator forms a comDact unitwith the two circle reading devices, theadjustment of which is therefore per-fectlv retained.

    presented by: Virtual Archive of WILD Heerbrugg

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    **3J, ' i! Centering Tripod

    The we l l -known Kern center ing t r ipodmakes the se t t ing up o l the ins t rumentan unbe l ievab ly s imp le and rap id opera t ion . S ince the te lescop ic center ingrod is jo ined a t r igh t ang les to theinstrument support plate, coarse levelingis ob ta ined au tomat ica l l y and s imu ltaneous ly w i th the mi l l imet re -accura tecentering. Fractions of a rotation on theleveling knobs on the lower part ofthe ins t rument a re su f f i c ien t fo r f ineleve l ing .The joint system of the tripod head ispro tec ted aga ins t dus t and humid i ty .I t i s p rec is ion-eng ineered fo r smoothoperation. Dirty tripod heads can bec leaned conven ien t ly and w i thoutdisassembly. An automatic interlockdev ice snaps the lock ing lever shutwhen an ins t rument o r an accessory(reflector, target, or rod foot) is placedon the t r ipod . The ins t rument o r acces-sory i s thus secured and the lock inglever can be l igh tened.

    Forced CenteringThe centering tripod affords decisiveadvantages in measu remen ts requ i r ingforced centering: all Kern instrumentsand accessor ies a re in te rchangeab le onthe var ious Kern center ing t r ipods bymeans o f a s lmp le manua l opera t ion ,without the centering being lost.

    Elbow EyepiecesElbow eyepieces allow very steep andver t i ca l s igh t ings . Thus , the K1-M cana lso be used as a p lummet wh ich is awe lcome expans ion o f i t s caDab i l i t ies .

    Optical Plummet- -e

    K1- M is f i t ted w i th an op t ica l: : Jmmet , the focus ing range o f wh ich, . :ends f rom 0 .7 m to in f in i t y . Accura te

    =" te r ing is thus poss ib le over ra isedr ' ' ecessed po in ts w i thout the need fo r: - :C t iona l equ ipment .


    presented by: Virtual Archive of WILD Heerbrugg

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    Gircle lllumination K1-M Gompass Combinationlf insufficient light is available, thereading fields are illuminated with thelighting fixture (at left) or with thediode lighting device " Lux-Timer" (atright). The lighting fixture is poweredby a small battery attached to thetripod leg or by the battery of theelectro-oDtical distance meter.The " Lux-Timer" has a built-inreplaceable 9V battery. lt is switchedon by depressing a button and willi l luminate the reading fields for about20 seconds.

    Theodolite with the DM 502


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    Due to its non-magnetic construction,the K1-M is except ional ly su i tab le forcompass surveys. The azimuth of theline of sight can be taken directly fromthe circular comoass.The horizontal circle can be orientedtowards the North with the tubularcompass.

    The Kern DM 502 electro-oDticaldistance meter can be combined notonly with the DKlVl2-A one secondtheodolite or with the scale theodoliteK1-S but a lso wi th the K1-M. Thedistance measuring part can be slippedon to the telescope and locked. Thisideal instrument combination Dermitssimultaneous measurements of anqlesand distances, such as are require forcadaslral surveys according to thepolar method or in lavout work on theconstruction site. Even with the attachedDM 502, the telescope of the theodolitecan be plunged over both ends. Thepower supply passes from the supplyunit on the tripod to the central il lu-mination connector on the lower Dartof the theodolite. The alidade thusremains freely rotatable and its oper-ation is not impeded by cables. (Furtherinformation on the DM 502 are con-tained in brochure number 145.)


    presented by: Virtual Archive of WILD Heerbrugg

  • Kern g Co. Ltd.Mechanical, Opticaland ElectronicPrecision InstrumentsCH -500'l Aarau. SwitzerlandTelephone (064) 251111Telegram Kern AarauTelex 68106

    Technical Specif icationsTelescope magnif ication 30 xObiective aperture 1.8 in. (45 mm)Shortestfocusing distance 5.1 ft. (1.5 m)Diameter of field of view at 1000ft. (1km)26 ft. (26 m)Multiplication constant 1 00Addition constant 0Diameter of horizontal circle3.5 in. (89 mm)Diameter of vertical circle2.8 in. (70 mm)Circla reading, direct 6"/2 mgonCircle reading, by estimation 3"fl mgonSensirivity of alidade level 30"/2 mmCentering range of compensator+2O'/O.4 gonCentering accuracy of compensator3" 11 mgonFocusing range of optical plummet2.3 ft. (0.7 m) to o"Height of horizontal axis6.7 in. (171 mm)Weight of inst.ument 10.2 lbs. (4.6 kg)Weight of carrying case 5.3 lbs. (2.4 kg)Dimensions of carrying case11.8 x6.3 x8.3 in . (30x16x21 cm)

    Manufacturing ProgramFor more than 160 vears Kern hasmanufactured surveying instrumentsand drawing equipment that havean outstanding reputation in all partsol the world.The present manufacturing programincludes:LvelsThoodolites


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    Ordering DataEngineer's theodolite K1-M 400 gonor 360', with upright telescope imageThe instruments are supplied in a metalcarrying case with adiusting toolsAccessoriesCentering tripod No. 1925 withtelescopic metal legsCentering tripod No. 1915 withtelescopic wooden legsElectrical lighring consisting of:battery case, lighting fixture andmirror for reticule il luminationDiode circle ilIumination system" Lux-Timer" with built-in exchangeableI V batteryEyepiece prismsEyepiece filterElbow eyepiecesGauss autocollimation eyepiecePentagonal prism attachment 90"Optical micrometerLens protection capRubber sunshade tubeTubular comoassCircular comfassTelescope level with coincidence prismsPlumb bob with plumb line plugElectro-oDtical distnce meter DM 502Optical roof and ground plummetExtension tube for centering rodof the centering tripodTraversing equipment Pl consisting of:2 targets in metal carrying case and2 centering tripods No.1925 or No.1915Invar subtense bar lBCentering plateFung