I am looking at purchasing
a set of steiner commander binoculars with built in compass
for my partner. I understand that when you purchase
a set they are calibrated to the region you will be cruising in. If you are on a circumnaviation, traveling through many zones, how do you recalibrate the compass
If we have to bring them in to a dealer to be recalibrated for each zone, they really won't fit the bill.
Any insights would be greatly appreciated about calibration and about the quality and usefulness of steiner commander binoculars with compass in general