Vane Air Flow Meters. A vane air flow meter (also known as a âflap styleâ meter and a VAF sensor) is an early type of air flow meter that measures air intake volume. This type of meter uses a spring-loaded flap that is attached to a variable resistor. As air enters, it pushes against the flap or plate opening it.
Bladder stones can be removed surgically by a cystotomy, opening of the bladder. Stones lodged in the urethra can often be flushed into the bladder and removed, but sometimes a urethrotomy is necessary.ladder stones can be removed surgically by a cystotomy, opening of the bladder. Stones lodged in the urethra can often be flushed into the bladder and removed, but sometimes a urethrotomy is necessary.
1 Over 90% of kidney stones are 5 mm or less. 2  If your kidney stone is 7mm or less, a natural remedy is the ideal treatment. 3  Fact! 4  If your remedy is larger than 7 mm, you will need to try the kidney stones removal remedy 2 to 3 times over the next three days.