|
The GR 1606 a or
B impedance bridges ... click to enlarge.
|
|
The 874 series variable
capacitors
|
|
Various General Radio
874-series adjustable and constant-impedance lines... Click to enlarge.
|
|
The GR 1602b or similar
admittance meters ... click to enlarge.
|
|
874 series adjustable stubs ... click to enlarge.
|