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A Guide to Buying a Total Station.

What is a Total Station? A Total Station is an instrument that measures both horizontal and vertical angles and distances.  It used by Engineers and Surveyors for setting out 3-dimensional points and for recording 3-dimensional points.  Total Stations were invented when an EDM (Electro-Magnetic Distance Measurement) device was added to a theodolite.  Originally these were mounted on top of the …

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The Purpose and Importance of Levelling and the Automatic (Dumpy) Level.

What is the Purpose of Levelling? In Surveying and Construction the Purpose of Levelling is to find the heights or elevations of different points of interest in relation to a specific known datum.  Knowing that specific points of interest are at the same or different heights or elevations is fundamental to our living spaces and our working spaces.  As Human …

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Recommended Reading For Construction Industry Professionals

Engineering or Surveying Book of the Month. Every month on this page you will find a book that we feel is recommended reading for either Site Engineers, Site Surveyors or any professional within the construction industry.  August 2019. This months recommended read is a book that has just been released. It is Building Your Future by Greg Wilkes. This book …

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Quick and Easy Checks on Automatic (Dumpy) Levels.

How to do Quick and Easy Checks on Automatic (Dumpy) Levels. When you feel that you haven’t the time to do a full two peg test on an Automatic (Dumpy) Level, then these quick and easy checks will give you confidence that you are getting the right results. Closing a Levelling Run is a Good Check on Automatic (Dumpy) Levels. …

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How to check a rotating laser?

How to check a rotating laser? Here is a straight forward, easy to follow guide on how to check a rotating laser.  This is straight forward and can be done on any site by anyone.  It is a more detailed version of a two peg test that are used to check auto levels, like the Topcon AT-B4A.  If you are …

How to Set Up Prism Stations Above a Known Point

This guide is suitable for setting up Prism Stations.  This method is the best practice for all Prism Stations, as it prevents the Prism Stations from being subjected to shocks or undue forces during the adjustment process. Remember that before setting up any prism station on a tripod it is important to know that the tripod you are using is …

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Topcon DT-205 Theodolite

The Topcon DT-205 and the Topcon DT-205L are part of the Topcon DT-200 series of theodolites. They have remained unchanged for a number of years, testament to the design of the theodolite. These theodolites are straight forward to use and fast to setup, ideal for busy construction sites.  The screen and interface on the Topcon DT-200 series is simple to …

How often should you check a rotating laser?

How often should you check a rotating laser? We would recommend that site staff should check a rotating laser for accuracy every week.  This site check should also be logged and stored with the Calibration Certificate for the rotating laser.  Any deterioration in the accuracy of the rotating laser can then be easily identified and the rotating laser can be …

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Topcon DL-503 Digital Level

If you have been using optical levels, like the Topcon AT-B4A or the Topcon AT-B3A, and you need the next step up in accuracy for your levelling work then you need to consider investing in a Digital Level like the Topcon DL-503.  The Topcon DL-503 is the entry level Digital Level in the Topcon Range. Both the Digital Levels produced …

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Topcon DT-207L Theodolite

The Topcon DT-207 and the Topcon DT-207L are part of the Topcon DT-200 series of theodolites. They have remained unchanged for a number of years, testament to the design of the theodolite. These theodolites are straight forward to use and fast to setup, ideal for busy construction sites.  The screen and interface on the Topcon DT-200 series is simple to …