These watt meters are sought after in the Collins Collectors market.

The top picture is of the 302E-1. I am not sure of the application for the unit (my guess is a airborne application). The unit reads 200 watts Forward Power and 200 Watts Reverse Power. The transducer is integral to the unit.

The bottom picture is of the 302C-3 watt meter. This unit has two scales for Forward and Reflected power -2000/200 watts. The transducer is a separate unit and can be located a few feet from the display. A cable and connector harness link the two units. ($350 08/00)