Vintage Thornton Associates Inc Type FGR-100 Function Generator Works - Nice!

CDE Cornell-Dubilier Electronics RDC Decade Resistor Unit

Thornton Electronics Decade Counter Power Supply Vintage custom chassis - WORKS!

GERTSCH - Model RT‑11R RATIO TRANSFORMER – PRECISION DECADE RADIO TRAN – TESTED

Duffers Associates, inc. TS-585D/U Audio Output Level Meter - UNTESTED

thornton type 410electrobiology photoplethysmograph

RESISTANCE DECADE SUBSTITUTION BOX 1/4 (0.25) WATT