OWEN'S BRIDGE 1764
For measuring Self inductance in terms of standard Capacity and resistance. Main Features: A plug-in type resistance bar, having range from 1 to 500 ohms, forming one arm of the bridge is connected in series with four decade dials over the range of 1, 10, 100 & 1000 ohms and Unknown Inductance. Four decade dials of 0.1, 1, 10 & 100 ohms are connected to a standard Capacitance dial over the range of 0.1x 10 Mfd Constitutes the 3rd arm of the Bridge. The 4th arm Contains one more standard Capacitance dial in the form of single decade 0.1x10 Mfd. Complete with audio oscillator & head phone.

HAY'S BRIDGE 1765
Measuring Inductance Coils of Large Time-Constant. A fixed resistance of 1kohm is connected in series with three decade capacitance of 0.0001mfd., 0.001mfd & 0.1 Mfd constitute one arm of the bridge. The second arm contains two resistance decade dial of 10 and 100 ohms. The third arm contains three decade resistance dials of 1kohms,10kohms and 100kohms. The experimental inductance is placed in the remaining arm with audio oscillator & head phone

CAREY FOSTER'S BRIDGE 1766
For Measuring mutual inductance in terms of capacitance & resistances. The 2 arms of the bridge comprises 3 decade dials of 10,100 & 1000 Ohms each. The other arm contains a standard variable capacitance in series with a decade resistance box Connections are provided for connecting two Inductances, AC supply & head phone. Complete setup with audio oscillator of 1 kHz, head phone & two self inductance to make them an experimental mutual inductance.

WEIN'S SERIES RESISTANCE BRIDGE 1767
For measuring Capacitance & Resistance of a Condenser.
Main Features: Two decade dials of 100 ohms each constitute two arms of the bridge. The third arm Contains 4 decade dials of 0.1, 1, 10 &100 ohms each constitute two arms of the bridge. The third arm Contains 4 decade dials of 0.1, 1, 10 &100 ohms Connected in series with a standard Capacitance arranged in single decade of 0.1x10 Mfd. the remaining arm contains 4 decade dials of 0.1, 1, 10 &100 ohms which are connected to the unknown capacitance. Complete with un known capacitance, audio oscillator and head phone.

DESAUTY'S BRIDGE 1768
For measuring of capacity with ratio of R1 & Series dial of R2 and one variable capacitor with Audio Oscillator, Air & Dielectric Capacitor and Head Phone Schering bridge Kit :- Measurement of small Capacitance A plug type resistance bar having 10, 20, 50,100, 200, 500, 1000, 2000 & 5000 ohms is connected in series with 4 decade dials of 0.1, 1, 10 &100 ohms. A variable capacitor with calibrated dial is connected in parallel with the four dial decade dials. A four dial capacitance box over the range of 0.001, 0.01, 0.1 & 1x10 Mfd is included in the circuit with working manual but with oscillator & head phone.

FREQUENCY BY WEIN BRIDGE 1769
Two decade dials of x10 & x100 is connected in parallel to 2 decade capacitance dials of x0.1 Mfd & 1Mfd. Constitute one arm of the Bridge. Two more decade resistance dials of x10 & x100 constitute the second arm of the bridge. The third arm comprises 2 decade dials of x100 & x1000 ohms. The fourth arm contains 2 capacitance dials of x0.1Mfd & 1 Mfd, Connected in series with 2 Terminal. An unknown resistance is connected to these terminals. Complete with Audio Oscillator & Head Phone.

PLATINUM RESISTANCE THERMOMETER 1770
Corning glass tube in valvet case. Resistance approx 2.8ohms. With copper leads.

POTENTIOMETER 1 WIRE 1771
Slide wire pattern with one wire stretched on a box wood meter scale 0-l00cm x 1mm. With two 4mm socket terminals fitted on a polished wooden base. Supplied with a knife edge jockey.