Defendable Elevations

oscarwagnerMember

Twice during my measuring career of less than 100 courses, I needed to compare Start and Finish elevations with a precision I could defend. I used an e-trex Summit taking 5 readings going back and forth between S & F three times averaging them. The instrument has a common 4' range of readings at a given elevation with a steady barometer. The other day after reading the elevation profile thread, I did a little more precise experiment. I took 10 readings with it on the floor and another 10 with it on a 15" high tote. The floor averaged 1,652.7' and the tote 1,654.2' for a difference of 1.5' or 18". On a windy day or with barometer fluctuations, there can be a lot of variability which is why it is necessary to go back and forth at least 2 times to get a credible elevation difference.

Does anybody have a better method?

Oscar Wagner
Johnson City, TN

8/14/154:18 AM

Original Post

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