Otters Conservation Status. Many of the different species of Otters have been heavily hunted in the past. As a result the numbers of them are quite low. This is why conservation efforts are in place to help them continue to survive. The main reason that these Otters were hunted though was for their fur.tters Conservation Status. Many of the different species of Otters have been heavily hunted in the past. As a result the numbers of them are quite low. This is why conservation efforts are in place to help them continue to survive. The main reason that these Otters were hunted though was for their fur.
A dynamometer or dyno for short, is a device for measuring force, torque, or power. For example, the power produced by an engine, motor or other rotating prime mover can be calculated by simultaneously measuring torque and rotational speed. In addition to being used to determine the torque or power characteristics of a machine under test, dynamometers are employed in a number of other roles. In standard emissions testing cycles such as those defined by the United States Environmental Protectio
A hydrometer or areometer is an instrument that measures the specific gravity (relative density) of liquidsâthe ratio of the density of the liquid to the density of water. A hydrometer is usually made of glass, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to specific gravity.