- A set of experimeita1 operations carried out with the object of determining the value of a quantity is called Measurement.
- The operation consisting of obtained the indication of the measuring instruments is called Observation.
- The weighing scales in a local market are calibrated against national Standard weights.
- Scientific or fundamental metrology concerns the establishment of measurement units.
- Legal metrology concerns regulatory requirements of Measurements and measuring instruments for the protection of health & public safety.
- The metric system became compulsory in the Netherlands from 1816 and was chosen by Spain in 1849.
- Measurement is an Observation that reduces an uncertainty expressed as a quantity.
- A system of Measurements is a set of units which can be used to specify anything which can be measured.
- Metric systems of units have evolved since adoption of the first well-defined system at 1791 in France.
- Inspection is the function to judge the Quality a product.
- Inspection is the art of comparing materials Product or performance with established standards.
- Inspection is an important aspect of Production
- To maintain the desired accuracy and quickness controlling the quality of a Product
- Quality control inspector must know statistical quality control Techniques programme well.
- Quality inspector should be able to minimize or Prevent wastage by using a substitute to the material already in use.
- Inspection standards for raw material are based upon Purchase specification.
- Complex and elaborated gauges and fixtures are used for the inspection of such Finished products.
- To see that proper care of costly equipment in inspection department is being taken is the responsibility of Chief Inspector:
- Lot by lot inspection method is also known as Sampling Inspector.
- Inspection may be done wither at the machines or in a central inspection room Separated form actual production.
- Inspection prevents the delivery of defective products to the Customer.
- Industrial inspection has emerged as a powerful tool for Management.
- Most important parameter in metrology is Observation.
- The term manufacture implies that the parts which go into an Interchangeable assembly may be e1ected at random from large number of parts.
- The metric system was originated in France.
- The British system of linear measurement is based on arbitrary unit known as Yard.
- A Yard or Meter is defined as the distance between scribed lines on a bar of metal under certain conditions of temperature and support.
- Precision is defined as the repeatability of a measuring process.
- Accuracy is the agreement of the result of a measurement with the true value of the measured quantity.
- Controllable errors are also known as Systematic errors.
- A Measuring instruments is any device that, may be used to obtain a dimensional or angular measurement.
- International organization of weights and measures was established in the year 1980.
- A Gauge is a tool r instrument used to measure or compare a component.
- Metrology is the knowledge dealing with the problem of measurements.
- The operations conducted with a view to verify that the measuring instruments confirms to a standard is called Examination.
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