Mostly Very Large power Wire-Wound resistors. The one in the middle (3rd from right) with torn note on it is a 4000 V meter multiplier for a 1 MA. meter. The two on right & bottom are 50 ohm, 160 watt resistors. The two mounted in a V-shape on teflon were used as a bleeder resistor for a 4000 VDC power supply. The variable is 10 ohms was used to set the heater voltage on a very large Amplifier I had. Included are 5 other WW resistors & rectifier bank with resistors and capacitors across each 1 amp diode. These items were in a amplifier that ran a pair of 4-CX 1500A tubes at you guess the power!!!