From Sega Retro
The Sega Boozometer is a 1960s bar game manufactured by Sega and acts as a way to “test sobriety” in players by challenging them through a coin deposit. The game is played by moving the ring over the rail, attempting to avoid contact. Should the ring touch the rail, a bell sounds and the coin drops into the cash box. If the player is sober and reaches the far end, their coin will be refunded by pushing the return coin button.