Imperialism in the U.S. Essay ... DBQ 15 Imperialism is the policy of extending the role of authority of a nation over a foreign country, usually in material gain, Military expansion and Economical reasons. In the late 1800âs and early 1900âs, the United States went through an era of imperialism.
Portable gas detector. A gas detector is a device that detects the presence of gases in an area, often as part of a safety system. This type of equipment is used to detect a gas leak or other emissions and can interface with a control system so a process can be automatically shut down.
Introduction to Instrument Calibration. A calibrator is an equipment used to adjust an instrument accuracy, often associated with a specific application. The most sophisticated industrial equipment will not be very useful unless it is calibrated.ll or part of the components used in an industrial process can be calibrated. A temperature calibration, for example, could involve a probe alone, an instrument alone, or a probe connected to an instrument (a system calibration).