flowmeter
Devices used to measure the flow of fluids or the air to measure respiration.
fluoroscopy
An x-ray machine capable of producing both still images and “real-time” motion of the joints or vertebrae. Often used to visualize intervertebral joint motion through flexion and extension of the neck or back or to place a syringe needle at a targeted site.
forceps
An instrument resembling a pair of pincers, used for grasping, manipulating, or extracting, especially in surgery.