Qty two RF ammeters
$50
The meter marked Southern Company Avionics is made by Triplett. It was tested by placing it at the base of my 630m vertical and measuring the current at 1.8A. It was then replaced by an ex RAF RF ammeter which also showed 1.8A. The meter fits a 2 3/16 inch diameter mounting hole
The other is made by Weston Electric Newark N.J. It was tested by placing a couple of 5W resistors totalling 1.3 ohms in series and connected to the output of my 13.8V power supply. The meter showed approx 10A as did the current meter on the power supply. This meter fits a 2 11/16 inch diameter mounting hole.