Pitometer 

A device which measures differential fluid pressure using two tubes; a dynamic tube pointing upstream into the flow, and a static tube pointing at right angles to the flow or optionally downstream away from the flow. The differential pressure measured across the tubes is proportional to the velocity of the fluid in which the tubes are immersed.
Pitometers are widely used to meaure water or gas flow in pipes, as they offer minimal restriction to the flow.

A pitometer inserted into a water or gas pipeline and connected to two pressure gauges, will display two different pressures, the upstream pressure being higher than the downstream pressure. From this differential pressure, the flow of the water or gas in the pipe can be calculated. Typically pitometers are supplied with a set of differential pressure look-up tables for different fluids.

Pitometer by waterworker December 5, 2013

pedometer

pedo-meter
a device that beeps everytime a pedofile is close to you

oh no! the pedometer is beeping. lets get out of here

pedometer by lschi1 March 31, 2015

pedometer

A scientific instrument for measuring the degree of a person's sexual attraction to children.

"Applicants whose pedometer scores are greater than 25% are not approved for the position of Scoutmaster."

pedometer by va1erio December 14, 2008

Pedometer

Device used to measure the number of children in the park at any given time.

To Kyle's delight, his pedometer allerted him that it was prime time to be at the local swingsets.

Pedometer by JoeCoolJRRT July 11, 2010

Pedometer

Pedo-Meter= a device that keeps count of how many pedofiles you pass.

My pedometer reached 314 today during my 2 mile jog through the park.

Pedometer by Camille Sterling January 11, 2010

penometer

The official ANSI intrument for measuring penis length and girth

penometer by Cornwallis September 17, 2003

pigometer 

a mobile device used to detect the signal strength of a pig's radar, sometimes also called a fuzz buster.

My pigometer just paid for itself twice on the expressway!

pigometer by Joshua Bradford August 31, 2006