Resistance Substitution Box

Set of 12 preferred value carbon resistors with rotary selection switch, in a box. Values are 33 Ω (10 W), 100 Ω (10 W), 330 Ω (5 W) 1 kΩ (1 W), 3.3 kΩ (1 W), 10 kΩ (0.25 W), 33 kΩ (0.25 W), 100 kΩ (0.25 W), 330 kΩ (0.25 W), 1 MΩ (0.25 W), 3.3 MΩ (0.25 W) and 10 MΩ (0.25 W).