Grass cutting rates will also vary depending on the frequency of mowing. If you have your lawn trimmed too infrequently, it will be more difficult to maintain. They are also based on square footage, though there is a minimum cost.rass cutting rates will also vary depending on the frequency of mowing. If you have your lawn trimmed too infrequently, it will be more difficult to maintain. They are also based on square footage, though there is a minimum cost.
A tonometer is a tool used to check the pressure exerted by the fluid inside a person's eyes in terms of millimeters of mercury (mmHg). This is done to make sure the eyes and optic nerves are healthy.
Magnetometers are devices that measure magnetic fields. A magnetometer is an instrument with a sensor that measures magnetic flux density B (in units of Tesla or As/ m2). Magnetometers refer to sensors used for sensing magnetic fields OR to systems which measure magnetic field using one or more sensors.Since magnetic flux density in air is directly proportional to magnetic field strength, a magnetometer is capable of detecting fluctuations in the Earth's field.n example is a fluxgate magnetometer that can measure the strength of any component of the Earthâs field by orienting the sensor in the direction of the desired component. â¢ Scalar magnetometers that measure only the magnitude of the vector passing through the sensor regardless of the direction.