1. Planck’s constant by black body kit

Power supply:  Fixed voltage source
Voltmeter range: 20 V
Resolution: 0.01 V
Ammeter range: 2 A
Resolution: 0.001 A
Milli-Ammeter:
Range: 200 mA
Resolution: 0.1 mA
Rated Input: 220 V/50 Hz or 110 V/60 Hz
Power Consumption: <50 W
Cabinet: Acrylic body, metal bottom
Connectors: 2 mm - 2 mm brass molded patch cords

2. Photo tube chamber

Photo Tube: GD-28
Filter: 555 nm fixed filter
Illumination: Tungsten filament light source
Rated Input: 220 V/50 Hz or 110 V/60 Hz
Power Consumption: <30 W
Cabinet: Metal