When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. Micrometer (device) - Wikipedia

   en.wikipedia.org/wiki/Micrometer_(device)

   A micrometer, sometimes known as a micrometer screw gauge (MSG), is a device incorporating a calibrated screw widely used for accurate measurement of components [1] in mechanical engineering and machining as well as most mechanical trades, along with other metrological instruments such as dial, vernier, and digital calipers.

3. Blower door - Wikipedia

   en.wikipedia.org/wiki/Blower_door

   Leakage area estimates can also be normalized for the size of the enclosure being tested, For example, the LEED Green Building Rating System has set an airtightness standard for multi-family dwelling units of 1.25 square inches (8.1 cm 2) of leakage area per 100 square feet (9.3 m 2) of enclosure area, to control tobacco smoke between units.

4. Pressure measurement - Wikipedia

   en.wikipedia.org/wiki/Pressure_measurement

   0.1 mPa is the lowest direct measurement of pressure that is possible with current technology. Other vacuum gauges can measure lower pressures, but only indirectly by measurement of other pressure-dependent properties. These indirect measurements must be calibrated to SI units by a direct measurement, most commonly a McLeod gauge. [22]

5. Duct leakage testing - Wikipedia

   en.wikipedia.org/wiki/Duct_leakage_testing

   A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating, ventilating and air-conditioning (HVAC) ductwork. A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a pressure sensing device to measure the pressure created by the fan flow.

6. Micrometre - Wikipedia

   en.wikipedia.org/wiki/Micrometre

   The micrometre (Commonwealth English as used by the International Bureau of Weights and Measures; [1] SI symbol: μm) or micrometer (American English), also commonly known by the non-SI term micron, [2] is a unit of length in the International System of Units (SI) equalling 1 × 10 −6 metre (SI standard prefix "micro-" = 10 −6); that is, one millionth of a metre (or one thousandth of a ...

7. List of metric units - Wikipedia

   en.wikipedia.org/wiki/List_of_metric_units

   The fermi is a unit of distance used in nuclear physics equal to 1 fm. [9] The angstrom (symbol Å) is a unit of distance used in chemistry and atomic physics equal to 100 pm. The micron (μ) is a unit of distance equal to one micrometre (1 μm). The basic module (M) is a unit of distance equal to one hundred millimetres (100 mm).