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  • Key features andbenefits

    Rugged, tough, anddurable

    Ease of operation

    Coaxial slow motion andclamps

    25 hour power supply

    Digital display withselection of different units

    Error elimination

    Automated measurementroutines

    ETh 50 Routine TheodoliteEasy-to-use, robust, precise, and fast routine theodolitebuilt for the building site

    Surveying instruments need to bereliable and fast, and they shouldalso be easy to operatejust like theETh 50 routine theodolite from theZeiss Elta line of Trimblesurveying systems. Key featuresinclude: Coaxial slow motion drive and

    clamp for rapid pointing. Easy-to-use menu driven

    operationtraditional manualsettings made on opticaltheodolites are replaced with asimple button press or menufunction.

    All measurement data can beviewed on the 4 line display,rapidly providing you with theresults that you need.

    Electronics eliminate the errorsassociated with traditionaltheodolites. Because themeasurements are automated, time-consuming tasks such as readingthe circles and reducing the dataare eliminated.

    The tubular level (plate bubble) isintegrated into the instrument,making it easy to level theinstrument.

    From classical angle measurement,setting out right angles and checkingplumb, right through to alignmentmeasurementsthe ETh 50 can doit all.The ETh 50 provides a high qualityall round theodolite for routinemeasurements in and around theconstruction site.

    Angle measurementthe easy wayElectronic scanning of the horizontaland vertical circles, with continuousdigital display of results,considerably speeds up themeasurement process, and eliminatesreading and estimation errors.

    Angle control at the press of abuttonThe ETh 50 provides automaticcontrol over standard theodolitefunctions: Clockwise and counter-clockwise

    angle measurement. Zero setting of the horizontal

    angle in any direction.

    Setting the horizontal circle to apredefined bearing.

    Conversion of the vertical angle topercentage grade.

    Definition of the zero direction ofthe vertical angle system, coveringa variety of conventions andapplications including: zenithangle, vertical angle, elevationangle, and % slope.

    All measurement units supportedThe ETh 50 displays data in allinternational measurement units,and it allows you to select theresolution: Measurement system units: 360

    DMS, 360 Decimal, 400Grads/Gon, 6400 mils.

    Display resolution: from 1"(0.3mgon), 5" (1.5mgon), to 10"(3 mgon).

    Operating convenienceThe ETh 50 has a clear keyboardlayout with just seven keys for thecontrol of all measuring functions.

    The clearly arranged four-linedisplay is 24 characters wide and itprovides simultaneous display of allmeasurement results, as well as theoptions provided by the functionkeys.The display and reticle areilluminated, providing easyoperation in poor conditions ordarkness.A minimum sighting distance ofonly 0.80m (2.62ft) ensures reliableresults even in confined spaces.

    Measuring accuracy and reliablilityThe ETh 50 provides automaticcorrection for errors associated withtraditional theodolites, deliveringaccurate results with fewerobservations. Errors eliminatedinclude: Sighting axis error, Index error, and Collimation error

    For classical angle measurements, setting out right angles, plumbing and alignment measurements.

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    Trimble Navigation Limited5475 Kellenburger RoadDayton, Ohio 45424-1099U.S.A.+1-937-233-8921 phone+1-937-233-9441 Faxwww.trimble.com

    Trimble Navigation EuropeTrimble GmbH

    Am Prime Parc 11D-65479 RaunheimGERMANY+49-6142-2100-0+49-6142-2100-220 Fax

    Trimble NavigationAustralia PTY Limited

    Level 1/123 Gotha StreetFortitude Valley, QLD 4006AUSTRALIA+61-7-3216-0044+61-7-3216-0088 Fax

    YOUR LOCAL TRIMBLE OFFICE OR REPRESENTATIVE

    Accuracy (DIN 18723)Horizontal angle measurement 6"/2.0 mgonVertical angle measurement 6"/2.0 mgon

    Angle measurement

    Hz and V circles absoluteMeasuring units 360 (DMS)

    360 decimal400 grad/gon6400 mils


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