Proof that Trackman doesn't measure, but calculates/
Hitting balls indoors, into a net and the machine reasy, say, 250 yards, but the ball ends up 12 feet away from you swing after swing, sometimes with a little "come-backer" of a couple feet.
Because the indoor net is only 12 feet deep.
Makes one think that the Trackman could have "seen" that comin' 🙂