Hampden SYN-100 Synchronizing Switch

Tested 3 & 4 Point DC Motor Starter Hampden DC-MS-100 #hamp3

Vintage Hampden H-IEC-DCI DC Motor Control Trainer Magnetic Amplifier Plugging

Hampden RL-100A Resistance Load Box 150V Lab Trainer Adjustable Resistor Bank

Hampden DCMS-100 3 & 4 Point DC Starter DC-MS-100

315MHz/433MHz SYN115 F115 Transmitter + SYN480R Receiver ASK/OOK Wireless Module

Hampden PSI-100 Phase Sequence Indicator

Hampden T-100A Experimental Transformer