Variable Resistor  Box 47E to 470K at 1W.  This Resistance Substitution box has a useful resistor range suitable for many applications especially in Senior Physics. 

Decade resistor box steps (in Ohms) : 47, 100, 470, 1k, 2.2k, 4.7k 10k, 47k, 100k, 470k

Designed to complement the Variable Capacitor Box SCE-200900