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.
An anemometer measures wind speed. It also can be attached by electric wires that transmit the varying speeds, wind speed changeds during the day with wind gusts, and recorded on a cylinder with graph paper showing the numbers or values of that wind speed. a windometer, a large tubular device 20 ft long and one foot high.