Quick Answer: The Resistance Substitution Box selects 12 resistance values from 100 ohm to 470 kilohm with a rotary switch, at ± 1% tolerance and 1.0 watt nominal power. Connections are made through dual 4 mm binding posts.
Last updated: October 2026
Key Features
12-position rotary selection
Values from 100 ohm to 470 kilohm
Tolerance ± 1%
Power dissipation 1.0 watt (nominal)
Dual 4 mm binding posts; switch positions labelled with their values
Technical Specifications
Specification
Value
Selection
12-position rotary switch
Range
100 ohm to 470 kilohm
Tolerance
± 1%
Power dissipation
1.0 watt (nominal)
Resistors
Metal film / carbon
Terminals
Dual 4 mm binding posts
Housing
ABS or metal enclosure
About This Product
A substitution box lets students try different resistor values in a circuit by turning a dial instead of swapping parts. It is used in Wheatstone bridge and potentiometer experiments and for quick circuit trials in physics and electronics labs. Schools, colleges and institutes in Belize, Egypt, Burkina Faso, Lebanon and Belarus can order the Resistance Substitution Box from Educational Instrument.
Frequently Asked Questions
How many resistance values does the Resistance Substitution Box offer?
It has a 12-position rotary switch covering values from 100 ohm to 470 kilohm.
