If a coach uses a miniature radar gun in the coach's box, how does the umpire rule?

In this scenario, the umpire would rule the use of a miniature radar gun in the coach's box as illegal and subject to punishment. This is because the use of electronic devices like radar guns during a game can provide an unfair advantage and disrupt the integrity of the competition. The rules governing the sport generally prohibit any external devices that can influence gameplay or provide real-time data to coaches. By allowing such devices, the balance of play can be compromised, as they may enable coaches to have immediate feedback on player performance or strategy, which is not permissible during an actual game.

While some scenarios might have specific allowances for training purposes or pre-game analysis, in-game use of a radar gun does not align with the established rules intended to maintain fairness among teams. Therefore, the ruling aligns with maintaining the standard of play as defined by the governing body of the sport.