Re: Which Kestrel?
Its of use if your using on the fly data with software that accepts blue tooth input from the kestrel.
Also good if you put the Kestrel 4500NV BT on a weather vane and tripod, and put it out in the field and let crosswind value come to your ballistic calculator via bluetooth.
I guess farmers could also have some use for it, to upload data to a weather station pc