BOLTR: Musical Reeds to measure RPM
15:52
Splitting Can't Hairs | Optical Measurement
8:42
How to make RPM meter | Digital Tachometer using IR Sensor
13:50
Vélo électrique mécanique
12:52
Gizz Bloc. Sometimes it's best not to ask.
17:17
BOLTR: Snap-On Polisher $$$ worth it?
18:40
Antique frequency meter (PWJ147)
13:43
Why are CFM ratings BS?
1:55:27