Drops on a Calibration Course

Although it is unproven, I believe that any hilliness in a calibration course will be negated by two-way riding. Very few cal courses are ridden one way only.

Is there a suspicion of a problem? I'm aware of none.

This has been discussed before, and some experimentation done. See the thread:

Hilly cal course

I'd agree with Pete here. I have one calibration course with a slight hill that consistently reads different one direction than the other by about 4-5 clicks. Unless I did all four rides the same way I don't see the issue. In this part of NC saying all calibration courses had to be flat would be pretty restrictive.

Asking for the net change sounds like a good idea and wouldn't be a burden to provide and the state certifier could use judgement. I've not see any evidence of lack of it on the state certifiers part.

The measurers should be considered to use some good judgment also. When you think about it, if you're measuring something like the Hog Pen Hill Climb or Mt Washington wouldn't it make sense to measure from the top and calibrate the same way?

At present there is no requirement on the calibration course application to put anything other than an approximate altitude of a calibration course. If this were changed to require start, finish, low and high altitudes then certifiers would get a better feel for whether excessive variation in calibration numbers is due to an irratic measurer or altitude changes.