How do you change a WPA edspot galvonometer into a ballistic galvonometer?

To convert a WPA eddy current galvanometer into a ballistic galvanometer, you need to adjust the instrument's damping and sensitivity settings. This typically involves minimizing the damping by removing or altering the damping mechanism, such as the fluid or spring system, to allow for quicker response to transient currents. Additionally, you may need to change the coil's configuration and increase its inductance for better performance in measuring the brief currents associated with ballistic measurements. Finally, ensure that the scale and calibration are appropriate for the expected current pulses.