Get a full overview of test and measurement series book series most recent volume building a successful board test strategy. We offer a broad spectrum of books on testing and measurements in electrical engineering products new back to all products new new in the store test measurement oscilloscopes . Purchase test and measurement know it all 1st edition print book e book isbn 9781856175302 9780080949680. A number of instrument are often used to get measurement data from various sources these include tests aptitude tests inventories questionnaires observation schedules etc all these sources give data which are organised to show evidence of change and the direction of that change a test is thus one of the assessment instruments