A. barometer
B. Voltmeter
C. Lactometer
D. Ammeter
Submitted by: Shakil Ahmed
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
