A: In bakelite case with 4mm socket and captive head terminals. Bobbins non-inductively wound with double silk covered constantan wire. Accuracy +

B: Non-inductively wound with double silk covered constantan coils on plastic rod enclosed in transparent plastic tube with two terminal and values figured. Accuracy + 0.2%. Rating 1 watt. Individually packed.

Range: A B C D E F

Ohms: 0.1 to 0.9 1 to 10 11 to 50 51 to 100 101 to 500 501 to 1000