Periodic Checking on Instrument Accuracy

General discussions of measurement techniques and the results of testing of techniques and equipment.

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#1)  Periodic Checking on Instrument Accuracy

Postby dbhguru » Wed Dec 23, 2015 3:18 pm

Hi Ents,

  I've started a round of instrument accuracy testing. Here are the first results for my LTI TruPulse 200X.

               
                       
TP200XvsGLR825.png
                                       
               


  This is a very limited test, only distance, but as you can see, Sparky is performing beautifully. An accuracy of +/- 2.06 centimeters is as good as it gets. But bear in mind, not every instrument will test this well. I received one of the first and the QC may have been at its best. Sometimes the early instruments are the ones with problems, but that isn't true in Sparky's case.

  I often state that Sparky is accurate to between +/- 3 and 4 centimeters, or to about an inch and a half. In this test Sparky was accurate to within 0.81 inches. This level of accuracy will not hold as tests get more demanding, but I have every expectation that Sparky's performance will remain stellar.

Bob
Robert T. Leverett
Co-founder and Executive Director
Native Native Tree Society
Co-founder and President
Friends of Mohawk Trail State Forest

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