Vintage Radio Shack Micronta 21-525B Field Strength and SWR Tester

Micronta Field Strength and SWR Tester Model 21-525B Radio Shack Open Box

Micronta 21-525B Field Strength SWR Tester Meter Vintage CB Ham Radio Shack

Micronta Field Strength/SWR Tester, Cat. No. 21-525B Tandy (Radio Shack) Corp

Micronta Field Strength SWR Tester 21-523 Radio Shack Ham Radio Antenna Meter

MICRONTA Field Strength and SWR Tester Model 21-525B

Vintage Radio Shack MICRONTA Field Strength and SWR Tester 21-525B Customized??

Vintage Radio Shack Micronta 21-525B CB Field Strength and SWR Tester , Untested