Two-Peg Test
Checks that your level reads true.
1Level halfway between the pegs
Read the staff on A, then on B.
2Level 3 m behind A
In line with the pegs. Read A, then B again.
Enter the four readings.
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Pegs 10 to 30 m apart on firm ground: the longer the better, as long as you can still read the staff to the millimetre. The good and adjust limits grow with the course length and are shown with each result. They are working rules of thumb: if your instrument's maker gives a tighter figure, use that.
Free field tool from Kootenay Environmental Innovations · kootenayenvironmental.ca
© 2026 Kootenay-Columbia Environmental Innovations Ltd. Free to use, copy and adapt for your own work, including commercial work, with this notice kept. Not for resale.