A duct blaster. The vents are all sealed up to prevent them from leaking. A duct blaster is a fan that pressurizes the duct system to find out how much it leaks. The leaks are then sealed as best as possible by the homeowner or a contractor and retested.
An energy auditor will typically own a duct blaster, but be sure to ask. A complete energy audit generally costs between $400-700. Google energy auditors for your area and see if your local utilities offer a reduced rate for energy audits. If so, see if duct blasting is included.
The actual gauge to measure the pressure or leakage is a manometer, these can be used with a duct blaster or a slightly different kind can be used to measure flow out of a particular duct.
A clock...
The easiest way I have found to measure pressure in a room is with a barometer. I have a three-gage weather station, a common appliance since the 1980's. This gives me an accurate measure in inches of mercury.
A very common instrument for the direct measurement of the density of a liquid is the hydrometer, which measures the volume displaced by an object of known mass. A common laboratory device for measuring fluid density is apycnometer; a related device for measuring the absolute density of a solid is a gas pycnometer. Another instrument used to determine the density of a liquidor a gas is the digital density meter - based on the oscillating U-tube principle.
The most common thing you would measure mass in would be grams and kilograms
Calipers, of which there are many types, are used to measure thickness. The most common type is the Vernier Caliper.
the common measurement of air pressure used by meteorologists is the isobar
The most common instrument (tool) is a tape measure.
A clock...
The instrument to measure wind resistance is called an anemometer or wind-meter. It is a common instrument used in weather stations.
A Barometer is one, a manometer another. In aircraft, a Pitot Tube is used to infer velocity. Otherwise, tyre gauges and other pressure gauges are appropriate in their sphere. A Bourdon Tube gauge is a common configuration.
Instrument leak test procedures vary depending on the type of instrument. It is very common to use either air or a liquid under pressure to check the instrument for leaks.
A spectrometer is used to measure properties of light. The most common usage is as an instrument attached to a telescope for astronomers to measure the chemical elements in a star.
The most common is the barometer, which measures atmospheric air pressure.
They use An anemometer. It is a device for measuring windspeed, and is a common weather station instrument. The term is derived from the Greek word anemos, meaning wind, and is used to describe any airspeed measurement instrument used in meteorology or aerodynamics.Anemometers can be divided into two classes: those that measure the wind's speed, and those that measure the wind's pressure; but as there is a close connection between the pressure and the speed, an anemometer designed for one will give information about both.There are two types of anemometers; namely cup and windmill anemometers
The easiest way I have found to measure pressure in a room is with a barometer. I have a three-gage weather station, a common appliance since the 1980's. This gives me an accurate measure in inches of mercury.
Not sure about pressure but wind speed is measured by an ANENOMETER.You may be able to meaure its pressure by some form of dynamometer (basically a spring-balance) attached to a target-plate of known area. There may also be calculations using speed and barometric pressure.
an instrument for measuring the pressure of a fluid, consisting of a tube filled with a liquid, the level of the liquid being determined by the fluid pressure and the height of the liquid being indicated on a scale