Laser Digital Theodolite with 600m Range

Sokkia Topcon releases the LDT520, a new 5" digital theodolite equipped with a telescope with laser beam emission capability. Representing a significant evolution over the previous model LDT50, the LDT520 boasts the world's longest laser range, class-topping dust and water protection, and a continuous operation time over 2.5 times that of its predecessor.   Other improvements over the previous model are a better protection against dust and water (IP66), absolute encoders providing 5" angle accuracy, a longer battery life (up to 12.5 hours at maximum output) and reduction of the optical plummet to 15cm instead of 20cm of the previous... (read more)
2008-12-09 12:20:58


Looking through a telescope; sending and receiving electromagnetic waves through this telescope; taking pictures through this same telescope. And all through the same line-of-sight: co-axial. <i>I know what it is, I know what it does, but how does it work?</i> Since their invention in about the 16th century surveyors have been using telescopes, initially to get a magnified image and thus see distant objects more clearly, later as an angle-measuring device. For the latter purpose, two parts had to be added to the telescope: a levelling vial and a circle over which the telescope rotates and which is provided with... (read more)
2005-10-17 12:00:00

DT20 Series Digital Theodolites

Sokkia is releasing a new digital theodolite series, the DT220, DT520, DT520A and DT620, with as a main distinguishing feature an improved power-saving technology. The DT620, recently set a world record for continuous operating time of 220 hours.   The DTx20 series digital theodolites maintain the charachteristics of previous DTx10 models, such as the industry's highest IP66 dust- and water-protection rating, advanced absolute rotary encoders that ensure long-term reliability, as well as user-friendly operation.   Other improvements, compared to the ancestors, are doubled operating time: model DT620 achieves an operating time of 220 hours with two R14 alkaline batteries. The... (read more)
2009-09-01 10:51:26

Total Station for Aircraft Levelling

One of the world’s most successful military training aircraft, the PZL-130 TC Orlik manufactured by EADS PZL Warszawa-Okecie S.A., Poland, is now being levelled with the aid of a Nikon Nivo 5M total station. Aircraft levelling, both longitudinally (forward and aft) and laterally (left to right), is performed in the final stages of assembly. Accurate levelling of the aircraft on the ground is required before precise alignment and symmetry checks can be performed to confirm that the geometry of the aircraft is to specification. Prior to using the Nikon Nivo total station, levelling was accomplished with a theodolite and precision... (read more)
2012-11-13 12:00:00

High-end Total Stations

Clear trends characterising today’s high-end total stations are cool design and ‘all in one’ instruments. Most remarkable, however, is China’s emergence as manufacturer of instruments for the most demanding area of the market. Four years ago (see Product Survey October 2002) we predicted that China would become a significant player as manufacturer of High-end Total Stations. We wrote: "For the future […] competition may come from an unexpected part of the world, and that is China. At the moment, the total-station industry in China is still focusing on construction-site personnel. However, the industry there is developing very fast and it... (read more)
2006-05-22 12:00:00

Total Stations for Construction

The Leica Builder is aimed at professionals on a construction site who need an intuitive yet innovative and powerful measuring tool. The device completes the Leica Geosystems range of construction products and is developed to increase productivity and efficiency, regardless of the user's profession: foreman, steel fitter, carpenter, utility contractor or architect. The Builder is to be used on any site for any task, without the need of any prior expert knowledge.   The Leica Builder is specially designed to meet the needs of anybody working on construction sites providing an easy-to-use operation concept. The built-in Leica PowerSite onboard software... (read more)
2009-09-21 10:24:53

Kolida Goes Worldwide

Guangdong Kolida Instruments Co., Ltd. (Kolida), a manufacturer of surveying products from China, has announced that it is operating international. Kolida specialises in designing, manufacturing, distributing, and servicing of surveying instruments. The corporation headquarter is located in Guangdong, China, and has several subordinate plants. The main products include total station, electronic theodolite, auto level, accessories, etc. Besides, it has developed its own surveying and GIS software. In their domestic market over 100 distributors form Kolida's distribution network. In 2004 they sold 1,300 total stations, 5,000 digital theodolites, 5,000 auto levels and 1,000,000 accessories in there domestic market. With the R&D... (read more)
2005-06-08 12:00:00

The Builder by Leica Geosystems

Leica Geosystems (Switzerland) has announces the Leica Builder, designed to meet the needs of building experts. The three models – Builder T, Builder R and Builder RM – are based on the same software and have the same concept of user interface. This makes switching from one model to the next extremely easy. Thanks to its unique features, such as the laser plummet, endless drive and the large display, The Builder T theodolite features a laser plummet, endless drive and a large display. The Builder R enables measurements of up to 250m with its electronic laser distance measuring system, thanks... (read more)
2005-10-10 12:00:00

USGS Continues to Expand Crowdsourcing Project

The U.S. Geological Survey (USGS) continues to expand its crowdsourcing activities for geographic data and is seeking volunteers nationwide to contribute structures information. The mapping crowdsourcing programme, known as 'The National Map Corps' (TNMCorps), encourages citizens to collect structures data by adding new features, removing obsolete points and correcting existing data for The National Map database. Structures being mapped in the project include schools, hospitals, post offices, police stations and other important public buildings. Since the start of the project in 2012, more than 780 volunteers have made in excess of 13,000 contributions. In addition to basic editing, a second... (read more)
2013-08-19 10:09:52

Total Stations: the Surveyor’s Workhorse

Features, Status and Trends
A total station is an angle measuring device, also known as a theodolite, integrated with an electronic distance measurement (EDM) unit. The integration provides the ability to measure horizontal and vertical angles as well as slope distances using the same device at the same time, which benefits the surveyor in terms of portability, convenience and speed. Today, total stations have a wide variety of capabilities and are extensively exploited in cadastral surveying, civil engineering and on construction sites. Read on for a synopsis of features, status and trends. For many decades, and up until the 1960s, theodolites were the major... (read more)
2016-10-24 11:01:57
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