Water draining from washing machine during spin cycle
Electrical sawing working
Dentist amalgamator machine
Dentist aspirator machine with air
Exterior of construction site with drilling rig - Rotary Bauer BG 28-H, some background noise and beeps
Diesel engine with handbrake shutting down.
Electric geiger counter ticking fast.
16mm projector starting and then stopping.
Adding machine adding up cash.