RHEOSTAT
Resistance wire wound on a pipe having dia 5.6cm,perforated cover for touch protection. Electrical connections via three 4 mm safety sockets. It can be used as fixed resistor and potentiometer. Fourth socket is used as earth.
| Porcelain Pipe Closed | Enamelled Pipe Closed | Length (cm) | Resistance (Ohms) | Current (Amps.) |
| SN771 | SF819 | 25 | 10 | 5.7 |
| SN774 | SF820 | 25 | 33 | 3.1 |
| SN772 | SF821 | 25 | 100 | 1.8 |
| SN775 | SF822 | 30 | 330 | 1.0 |
| SN773 | SF823 | 35 | 1000 | 0.57 |
| SN776 | SF824 | 30 | 3300 | 0.31 |
RHEOSTAT - ENAMELLED IRON PIPE OPEN TYPE
Wire wound on Enamelled Iron pipe having dia 5.6cm. Supports are made of Aluminium.
| Cat No. | Length (cm) | Resistance (Ohms) | Current (Amps.) |
| SE741 | 15 | 1400 | 0.3 |
| SE742 | 40 | 5100 | 0.3 |
| SE743 | 15 | 150 | 1 |
| SE744 | 20 | 255 | 1 |
| SE745 | 25 | 300 | 1 |
| SE746 | 30 | 375 | 1 |
| SE747 | 25 | 56 | 2.3 |
| SE748 | 40 | 100 | 2.3 |
| SE749 | 15 | 10 | 4.2 |
| SE750 | 25 | 20 | 4.2 |
| SE751 | 40 | 35 | 4.2 |
| SE752 | 15 | 3.5 | 6 |
| SE753 | 25 | 7.5 | 6 |
| SE754 | 40 | 13 | 6 |