GR 1426 Four-Terminal Capacitance Standard, $ 795
7 decades of capacitance values from 1uF to 1F, with specified accuracy at 120Hz
of 0.25% on most ranges.
GR 1432X Decade Resistor, $ 170
6 decades, 0.1 Ohm/step to 10k Ohms/step, 100k Ohms total.
GR 1560-P21 Vibration Control Box for 1560-P51 Vibration Pickup $ 40
GR 1560-P98 accepts 1″ Ceramic Mic Capsule, output to a GR874 $ 20
GENRAD 1633-A Incremental Inductance Bridge, $ 1,295
Superb bridge for characterizing inductors, rectifiers, and Zeners from 50Hz to
15.75kHz, over a wide range of voltages and currents. See op manual here
GENRAD 1689M Precision RLC Digibridge, $ 1,375
12Hz – 100kHz (500 freq’s), 4-terminal measurements with 0.02% basic accuracy,
GPIB and handler interface option, variable test voltage, open/short compensation.
Now made and sold by IET Labs, see specs and manuals here
GR M2G2-MFP Dual Ganged 400Hz Variac, two 120VAC 2.4A 400Hz variacs $ 85
on a common shaft with knob, looks brand new unused.