THE thermionic valve has long been recognized as a useful tool in many branches of science and engineering; but few, with the exception of experimenters, have realized that it can be usefully applied ...

ISA recently published the third edition of Calibration Handbook of Measuring Instruments by Alessandro Brunelli. In this Q&A feature, Brunelli highlights the focus, importance, and differentiating ...

ALTHOUGH, as the author points out in the preface, the subject of electrical measuring instruments is of great importance, there exists so far not a single work in the English language dealing ...

The electronic gauge is designed for measuring wheel rolling circle diameter with high precision. Measurements are made directly on rolling stock without wheelset roll-out. This is performed according ...

Measurement of signals close to the your measuring instrument’s noise floor is always difficult. For many years the best Op Amps have had input noise floors of right around 1 nV/√Hz. This makes any ...

Test instruments such as oscilloscopes and DMMs (digital multimeters) often let you get the measurement results you need with just the press of a button. But the number on a meter's display or the ...

The SJ-220 portable surface roughness measuring instrument has touchscreen and wireless capabilities. The intuitive touchscreen has a user interface that supports fingertip operations, including flick ...

The demand to increase energy efficiency in electrical products is driving the development of more accurate measurement instruments. Modern instruments now can quantify incremental gains made as ...

People breathing contaminated air over the course of years are at greater risk of developing numerous diseases. This is thought to be due to highly reactive components in particulate matter, which ...