Aneroid gauges are based on a metallic pressure sensing element that flexes elastically under the effect of a pressure difference across the element.

" Aneroid " means " without fluid ," and the term originally distinguished these gauges from the hydrostatic gauges described above.

** Aneroid sphygmomanometers ( mechanical types with a dial ) are in common use ; they require regular calibration checks, unlike mercury manometers.

Aneroid sphygmomanometers are considered safer than mercury based, although less accurate.

Aneroid barometers sold for domestic use typically have no compensation.

Aneroid barometers have a mechanical adjustment for altitude that allows the equivalent sea level pressure to be read directly and without further adjustment if the instrument is not moved to a different altitude.

*: D. C. W. T. Sharp: " Aneroid barometer "

His experiences in South America having convinced him of certain serious errors in the readings of aneroid barometers at high altitudes, he published a work entitled How to Use the Aneroid Barometer and succeeded in introducing important improvements in their construction.

To overcome breaks of gauge some bogies are being fitted with variable gauge axles ( VGA ) so that they can operate on two different gauges.

* There are operated by other sugarcane companies in various gauges:,, gauges ( 1995 ).

There are several different fret gauges, which can be fitted according to player preference.

Where shotshell reloading remains popular, however, is for making specialized shotgun shells, such as for providing lowered recoil, when making low cost " poppers " used for training retrievers before hunting season to acclimate hunting dogs to the sound of a gun firing without actually shooting projectiles, for achieving better shot patterning, or for providing other improvements or features not available in commercially-loaded shotshells at any price, such as when handloading obsolete shotshells with brass cases for gauges of shotshells that are no longer commercially manufactured.

In contrast, shotshell presses are most often configured for reloading just one gauge of shotshell, e. g., 12 gauge, and are rarely, if ever, reconfigured for reloading other gauges of shotshells, as the cost of buying all new dies, shot bar, and powder bushing as required to switch gauges on a shotshell press often exceeds the cost of buying a new shotshell press outright, as shotshell presses typically come from the factory already setup to reload one gauge or bore of shotshell.

Instruments used to measure pressure are called pressure gauges or vacuum gauges.

Liquid column gauges consist of a vertical column of liquid in a tube that has ends which are exposed to different pressures.

Liquid-column pressure gauges are independent of the type of gas being measured and have a highly linear calibration.

However, aneroid gauges can be used to measure the pressure of a liquid as well as a gas, and they are not the only type of gauge that can operate without fluid.

For this reason, they are often called mechanical gauges in modern language.

Gauges that rely on a change in capacitances are often referred to as Baratron gauges.

These gauges are accurate from 10 Torr to 10 < sup >− 3 </ sup > Torr, but they are sensitive to the chemical composition of the gases being measured.

The exact form or formulation of ghosts is dependent on the particular gauge chosen, although the same physical results are obtained with all the gauges.

Modern electronic vacuum gauges are simpler to use, less fragile, and do not present a mercury hazard, but their reading is highly dependent on the chemical nature of the gas being measured and their calibration is unstable.

Maintenance cycles of cold cathode gauges are, in general, measured in years, depending on the gas type and pressure that they are operated in.

Hydrostatic and elastic gauges measure pressure are directly influenced by force exerted on the surface by incident particle flux, and are called direct reading gauges.

The National Oceanography Centre, which records tides at tidal gauges placed in about 55 ports of the UK Tide Gauge Network on an ongoing basis, records the highest mean tidal change between 1987 and 2007 at Avonmouth in the Severn Estuary of.

A single-hose regulator with 2nd stage, gauges, BC attachment, and dry suit hose mounted on a cylinder

Commercial machine shops, especially those that do certain categories of work ( military or commercial aerospace, nuclear power industry, and others ), are required by various standards organizations ( such as ISO, ANSI, ASME, ASTM, SAE, AIA, the U. S. military, and others ) to calibrate micrometers and other gauges on a schedule ( often annually ), to affix a label to each gauge that gives it an ID number and a calibration expiration date, to keep a record of all the gauges by ID number, and to specify in inspection reports which gauge was used for a particular measurement.

Edward Murphy proposed using electronic strain gauges attached to the restraining clamps of Stapp's harness to measure the force exerted on them by his rapid deceleration.

* In operation-hours gauges, two thin columns of mercury are separated by a small electrolyte-filled gap, and, as charge is passed through the device, the metal dissolves on one side and plates out on the other, causing the visible gap to slowly move along.

The USGS operates four streamflow gauges on the Yakima River.

Sidings at South Wales Junction allowed traffic to be transhipped between wagons on the two different gauges.

Rolling stock did not need to match the gauge exactly ; a difference of a few millimeters could be coped with, so that interoperability on systems with gauges only slightly different was possible.

On the and gauges, the extra width allowed bigger inside cylinders and greater power, a problem solvable by using outside cylinders and higher steam pressure on standard gauge.

Attempts to economise on the cost of construction led to the adoption of gauge and then and narrow gauges for many secondary and feeder lines, particularly in mountainous terrain.

Vehicles on these gauges generally operate at very low speeds.

Symons began experiments on new gauges in his own garden.

Unlike other scales and gauges, which were de facto standards at best, within two years N scale manufacturers defined the gauge, voltage, as well as the height and type of couplers.

When using strain gauges of the normal wire type in the dynamic testing of helicopter components, notably rotor blades, Saunders-Roe found that such a high proportion of the gauges were failing that development was considerably retarded.

Positraction rear ends, axle ratios, gauges, Super Stock wheels, HD cooling and many sport type options were available, but had to be ordered.

They are generally assembled from standard parts where the gauge portion is interchangeable with other gauge pieces ( obtained from a set of pin type gauge blocks ) and a body that uses the collet principle to hold the gauges firmly.

Some unique features of the car were the all LCD monitor display for odometer, gauges etc .. and a " belt type " steering wheel that used to rotate in either direction while mounted on the main display.

In c1875 the company produced its first Bourdon type pressure gauges thanks to the expiry of patents.