|
Tachymeter Scale Bezel Close-up
Tachymeter may refer to: *Tachymeter (survey) or tacheometer, a type of theodolite used for rapid measurements of distance *Tachymeter (watch) A tachymeter (pronounced ) is a scale sometimes inscribed around the rim of an analog watch with a chronograph. It can be used to conveniently compute the frequency in hours of an event of a known second-defined period, such as speed (distance o ..., a scale sometimes inscribed around the rim of an analogue watch {{disambiguation ca:Taquímetre es:Taquímetro fr:Tachymètre nl:Tachymeter ja:タキメーター no:Tachymeter ru:Тахиметр sk:Tachymeter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tachymeter (survey)
Tacheometry (; from Greek for "quick measure") is a system of rapid surveying, by which the horizontal and vertical positions of points on the earth's surface relative to one another are determined without using a chain or tape, or a separate levelling instrument. Instead of the pole formerly employed to mark a point, a staff similar to a level staff is used. This is marked with heights from the base or foot, and is graduated according to the form of tacheometer in use. The horizontal distance is inferred from the vertical angle included between two well-defined points on the staff and the known vertical distance between them. Alternatively, also by readings of the staff indicated by two fixed stadia wires in the diaphragm (reticle) of the telescope. The difference of height is computed from the angle of depression or elevation of a fixed point on the staff and the horizontal distance already obtained. The azimuth angle is determined as formerly. Thus, all the measurements requ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tachymeter (watch)
A tachymeter (pronounced ) is a scale sometimes inscribed around the rim of an analog watch with a chronograph. It can be used to conveniently compute the frequency in hours of an event of a known second-defined period, such as speed (distance over hours) based on travel time (distance over speed), or measure distance based on speed. The spacings between the marks on the tachymeter dial are therefore proportional to , where ''t'' is the elapsed time. The function performed by a tachymeter is independent of the unit of distance (e.g. statute miles, nautical miles, kilometres, metres etc.) as long as the same unit of length is used for all calculations. It can also be used to measure the frequency of any regular event in occurrences per hour, such as the units output by an industrial process. A tachymeter is simply a means of converting ''elapsed time'' (in seconds per unit) to ''rate'' (in units per hour). Measuring speed To use a tachymeter-equipped watch for measuring speed, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tachymeter
Tachymeter may refer to: *Tachymeter (survey) Tacheometry (; from Greek for "quick measure") is a system of rapid surveying, by which the horizontal and vertical positions of points on the earth's surface relative to one another are determined without using a chain or tape, or a separate l ... or tacheometer, a type of theodolite used for rapid measurements of distance * Tachymeter (watch), a scale sometimes inscribed around the rim of an analogue watch {{disambiguation ca:Taquímetre es:Taquímetro fr:Tachymètre nl:Tachymeter ja:タキメーター no:Tachymeter ru:Тахиметр sk:Tachymeter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
