Though these devices may look intimidating or confusing, dumpy levels are fairly easy to use once you know how to set them up and what kinds of measurements they provide. It is also called as automatic level or builders level. A dumpy level, also known as an automatic level or builders level, is a tool designed to find the height of land masses. The telescope is fixed to its supports in dumpy level and hence it cannot be.
Optical and digital dumpy level, where the sighting a leica na2 optical level, a leica optical, product buying advice. Bosch laser level user manuals download manualslib. The internal spirit level makes sure the device is level to to the horizon. It is used in archaeological surveying to measure horizontal levels, for example to demonstrate the difference in height at the top and base of a slope such as. Nov 19, 2019 a dumpy level, also known as an automatic level or builders level, is a tool designed to find the height of land masses. Here you will find all available manuals which you can download view andor print for dave white sitepro brands instruments and tools. Dumpy level is an optical surveying leveling instrument consisting a telescope tube firmly secured in two collars fixed by adjusting screws to the stage by the vertical spindle. Mark the point at which the theodolite will be set up with a surveyors nail or a stake. Hand levels hand levels can be a great tool for use by professionals and consumers. Imex lar 32 auto dumpy level is one of the most robust autolevels dumpy level available. Dumpy level definition is a surveyors level with a short telescope rigidly fixed and rotating only in a horizontal plane.
Elevations of different points and distance between the points of same elevation can be determined by dumpy level. A dumpy level does not refer to a level far past its prime, but rather to an instrument used to measure, transfer, or set horizontal lines. Dumpy level heads have an eyepiece, a spirit level, levelling screws, and a focus for the telescope lens. Dumpy and auto levels are two types of levelling instruments used in modern surveying operations. Leica tri70 tripod suitable for disto lino and other.
This video is based on one version of an automatic level and although other makes and models look. The right level for every application do you want to measure distances, assign datum lines, define height differences or read heights. Parts names and uses of auto level and theodolite youtube. Theodolite parts and its functions for measurements in surveying. The modern form of dumpy level has the telescope tube and the vertical spindle cast in one piece and a long bubble tube is attached to the top of the telescope.
The level kit consists of a level head in box, staff and tripod. A dumpy level or spirit level is used to establish the height difference between two measured points. Dumpy level parts and functions pdf to use dumpy level properly, surveyors may require some operation manual. Dumpy levels have been replaced by more modern laser leveling devices, but are still used extensively in. Pdf land surveying using auto level, leveling staff and. The wye level has an advantage over the dumpy level in the fact that the adjustments can be tested with greater rapidity and ease. Upon initial setup of a station, the levels of the relevant parts of the installation are established and recorded by means of accurate levelling. The automatic level, which gives a horizontal line of sight automatically, is the most. Selfleveling compensator with transport lock protects pendulum in. Each block represents one centimetre, and each e represents 5 centimetres. However, there are plenty more parts that play a key role in the success of the automatic level.
Its innovative technology makes the daily surveying jobs easier. Dumpy level,abney level,tilting level,digital level. Selfleveling compensator with transport lock protects pendulum in carrying case against damage and loss of calibration. Dumpy level is commonly used leveling instrument to locate the points in same horizontal plane. Levelling in surveying using dumpy level engineering basic. Instruction manual for a leica dumpy level south australia.
Depending on the application and the required level of accuracy, the na700 series has the right level for your daytoday tasks. They were first created when someone thought of attaching a spirit level to a telescope. Jun 02, 20 this video shows you the parts of the automatic level. The often used quickset level is a tilting level without footscrews. Its main parts consist of a telescope, a center spindle, and the level tube. It is widely used in surveying and construction to measure height differences and to transfer, measure, and set heights of known objects or marks. A dumpy level is a leveling tool used in surveying. The dumpy level originally designed by gravatt, consists of a telescope tube firmly secured in two collars fixed by adjusting screws to the stage carried by the vertical spindle. Jun 04, 2018 dumpy level, also known as builders auto level or automatic level is an optical instrument used to establishing same points in the same horizontal plane. The graduated circles, one vertical and one horizontal, allow the user to actually survey for angles.
The following dumpy level operators manual is provided with sokkia b40 instrument. It is used to focus the cross hair fitted in the telescopic tube of the level near eye piece. The parts of an optical level basically, an optical level is a telescope a that can be set perfectly level by turning the leveling screws b and watching the sensitive vial or bubble c. The dumpy level is an optical surveying leveling instrument consisting a telescope tube firmly secured in two collars fixed by adjusting screws to the stage by the vertical spindle. Dumpy level, also known as builders auto level or automatic level is an optical instrument used to establishing same points in the same horizontal plane.
It is used to see the leveling staff kept on a ground point. Download and view user manuals dave whites sitepro. Since the primary measurement being recorded by the auto level is elevation, you will want to make sure that your very first measurement records this datum. The telescope can be rotated over a 360 degree scale d so that angles can be measured and read off. Telescope is used to observe the distant object through line of sight provided by its arrangement. Stepbystep guide to dumpy level survey a dumpy level also known as a builders level is an optical instrument used to establish or check points in the same horizontal plane. This reduces the need to set the instrument base truly level, as with a dumpy level. If your tool is a model not listed on the website, email us with your information. This video is based on one version of an automatic level and although other makes and models look different they will all have the same basic.
Large aperture 26xpower lens allows more light for a sharper image and excellent magnification. Aug 27, 2019 to use dumpy level properly, surveyors may require some operation manual. Before attaching level screw 5570317, apply grease to the threads m7x0. What are parts and functions of a dumpy level answers. Imex lar 32 auto dumpy level professional dumpy level. The bosch gol 32 automatic optical level features a selfleveling compensator, both horizontalvertical cross hairs and stadia lines, 32x magnification lens and large aperture for clear image. After tightening spanner nut 5570320 onto level screw 5570317, fix and seal it with anaerobic glue glue. Hand levels, abney levels, and dumpy levels explained. Dumpy level surveywhat, where, how, parts civil engineering. This video shows you the parts of the automatic level. Dumpy level is an optical instrument used to calculate dig levels, transfer t. The level head comprises an eyepiece, bullseye spirit level, three levelling screws and a focus for the telescope lens.
A wide variety of dumpy level price options are available to you, there are 263 suppliers who sells dumpy level price on, mainly located in asia. Using the dumpy level requires you to put in all of the work. Comparative study of accuracy in distance measurement using. However, the adjustments do no have a longer life and are disturbed more frequently due to a large number of movable parts parts manual. As levelling survey instruments auto and dumpy levels are most often used in the surveying of buildings or potential building sites to establish the relative elevations of different points, distances between points, and bearings from around the site. The dumpy level is a very simple basic instrument, while the tilting level has certain modifications, which give greater convenience of operation and a possibility of greater precision. It is used in archaeological surveying to measure horizontal levels, for example to demonstrate the difference in height at the top and base of a slope such as an excavated pit or a surviving earthwork. Dumpy level definition of dumpy level by merriamwebster. User manuals, bosch laser level operating guides and service manuals.
Na720724728730730 plus, description of the system 15 2 description of the system general description the na720724728730730 plus is a member of a new generation of construction levels. A magnetic damping compensator ensure better stability and reliability in all conditions. The advantages which have made the dumpy level so popular is given below. Due to the rigidity of dumpy levels, it retains its two adjustment for a long time. Recording and analysing obtained readings using autocad and excel. General titanium optical level dumpy 24x with plumb 88720.
Apr 27, 2017 a dumpy level also known as a builders level is an optical instrument used to establish or check points in the same horizontal plane. The telescope can rotate only in a horizontal plane. Wye level y level in levelling definition and procedure. It is used in surveying and building with a vertical staff to measure height differences and to transfer, measure and set heights. A dumpy level also known as a builders level is an. To use dumpy level properly, surveyors may require some operation manual. Theodolites how does a theodolite work theodolite vs. The basic setup of an automatic level consists of the telescope, the circular level, three leveling screws, and a compensator. An automatic level, selflevelling level, or builders auto level includes an internal compensator mechanism a swinging prism that, when set close to level, automatically removes any remaining variation. The bubble in the tube has to be brought in the center to leveling the base of the instrument. The telescope of dumpy level can rotate only in a horizontal plane. The dumpy level is a widely used surveying instrument in surveying.
The instrument is ideally suited for all appli cations of a reliable and robust construc. Land surveying using auto level, leveling staff and theodolite. Bases come with a 360degree compass and a staff which comes in sections. Also called a builders level, an automatic level, or a leveling instrument, these gadgets are often used in surveying buildings or land to establish relative height, distance, and bearings from different parts of a site. After tightening spanner nut 5570320 onto level screw 5570317, fix and seal it with anaerobic glue glue should not touch painted surfaces and plastic parts. A level is an optical instrument used to establish or verify points in the same horizontal plane in a process known as levelling, and is used in conjunction with a levelling staff to establish the relative heights levels of objects or marks. Please follow the instruction properly to operate dumpy level properly. All models are built to withstand tough aussie conditions and are made with quality parts for all professional jobs. We have gathered some pdf manual for the dumpy level instrument. Aug 30, 2015 the dumpy level originally designed by gravatt, consists of a telescope tube firmly secured in two collars fixed by adjusting screws to the stage carried by the vertical spindle. They are a very practical and low cost tool with a wide variety of uses. They are maintained in pdf format for easy download and view. Dumpy level surveying components, procedure, advantages.
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