text: where can i get accurate, scientific strobe lights or tachometers? this is not for a car, it's for motor model ...that i've constructed. and i want to see how fast the shaft turn. please tell me the price and source. thank you...↑ type in scientific equipment in google or ask.com and got to the websites it brings up. there are quite a few science equipment suppliers in this country and the prices vary so do shop around