The USGA has posted the proper wording for local rules related to distance measuring devices.
Also seems that they don't like being affiliated with these devices.
In establishing these usage guidelines, the USGA does not endorse or approve any brand of distance-measuring devices. Manufacturers are not permitted to use the terms “USGA approved” or the like in any product advertising.
Then they might not want to go to this home page, where they are talking about the "official sanctioning" of the devices.