🌐 Show Forums for All Locations

Scale factor of Leica Total station TS02-7”

Hi Guys:

This days I am using Leica total station that Leica operating system has something called

“Scale factor”.

I am using Leica TS03-7” manufactured 2010, made in Switzerland and used GPS to establish control point.

This are my problems

1. Should I care scale factor when doing large scale surveying and sitting out?
2. What is the real idea of scale factor. thanks

You need to be a member of Land Surveyors United - Global Surveying Community to add thoughts!

Replies

• .
• Total Stations do not have any scale factor dude, its depend on your work area national grid sacale factor,ask to your national surveying agency about your area scale factor

• Student Surveyor

Will answer your qns the other way round to hopefully give you a better understanding. Cheers to the rest for some good explanations. May be wrong and please correct me if I am wrong. Am a student surveyor and sharing what I learnt!

1. Scale Factor is the correction applied when you calculate what you measured against the projection/coordinate system you used. If Scale factor is not applied to your total station measurements. When you tie up your GPS control points via traversing, you will find that your traverse will not close well and have bad accuracy.

2. In Large Scale Surveying, you definitely would like to apply scale factor correction to your measurements to ensure their accuracy.

However in setting out works, the distances between your controls and stake out points would be short enough (hopefully it's short or you are gonna have problem with angular swings) that scale factor corrections are negligible.

• How are you a surveyor when you don't know what scale factor is ??? - Here in England we use it on 90% of surveys. The use of a map projection always introduces distortions into your data in the form of scale factors, which make ground distances different from plotted distances. There are also small differences between grid directions and true directions. These distortions are inevitable when the curved surface of the earth is represented on a flat plane.

• Scale factor becomes important when using national grid coordinates on a projection as opposed to plane coordinates on the horizontal plane. The errors in distance between distances measured a total station and those calculated from national grid coords will in with distance. There may also be an error in measured distances between coords from GPS using National coords as opposed to total station distances.

Land Surveyor

How to Utilize Surveyor Forums

How to use Forums
Our forums on Land Surveyors United are here to be used as much for finding help with problems in the field as the are for you to express your opinions on anything that has to do with land surveying in general. Feel free to share anything that is on your mind, as long as it isn't meant to damage another member's reputation. Please keep it clean and help insure that everyone has the opportunity to enjoy the benefits of being part of a community that grows together.

We are committed to allowing freedom of expression for all of our members, and that includes maintaining a safe space for people with opposing views to express themselves. We get posts from all over the country and even the globe, so needless to say, people come with different viewpoints on lad surveying practices and processes. We see this diversity and variety as a real strength-- dialogue and debate are an integral part of the educational process, as well as an important tool in exploring different sides of complex issues.

All Community Hubs inside the community have their own forum for asking specific questions to other surveyors, by location, equipment type, etc.