a wee gee board
An electroscope is an instrument used to detect static electricity.
One instrument that used to detect Tsunami is a deep ocean tsunami detection buoys.
The explorer is used by the dentist to detect decay.
hmmm
Amperemeter (or Ammeter)
periotron
It is Thermoscope
The instrument which is used to detect a charged body is known as an eletroscope. Now you can visit google images or any other site and find out the diagram... :)
EKG (electro cardiogram).
seismic waves
Geiger Counter *********Contributed by Czar Acumen**********************
Doppler effect