AR Survey Instruments

Bharat Nagar, Roorkee, Uttarakhand

This is a Vernier Theodolite incorporating the famous Stanley solid 'U'or V frame single casting design, where the support for the horizontal axis is cast in one piece. The instrument therefore features a vernier reading system for the horizontal and vertical circles instead of an optical micrometer system. The circles are equipped with magnifying glasses attached at opposite ends of each circle for more comfortable vernier reading SpecificationsType of TheodoliteVernier typeAccuracy20 secStandard deviation20 (direction deviation 5mm at 100m)LanceCoated lance(Special), CaseWooden boxAxisSteelHead & ScrewPlastic typeMeterialAllumenium & brassMagnification30 XObjective aperture40 mmShortestLongest reading Staff5500 footLength of telescope7 inchStadia Line Ratio1:100Additive constant0Sensitivity of plate bubble90-120Sensitivity of vertical circle bubble90-120Weight (Wout Box)6 Kg.ConditionGoodOptical plummetMagnification2.5 XFocusing Range0.5 m -infiniteVertical Circle & Horizontal Circle(a) Graduation Of Circle360(b)Reading by Vernier20" 10" Used ForConstruction surveyingCadastral workRail-roadshighway alignments FeaturesHigh performanceRobust constructionOptimum qualityEasy maintenanceLonger working life The instrument consists ofA levelling base which supports the main working parts of the instrument and is capable of being screwed onto a tripod, A lower circular horizontal metal plate with a Germen silver vernier graduation, An upper circular horizontal plate, A vertical circle with vernier graduations.A telescope with an altitude bubble attached beside the vertical circle.