Angular Measurements: - Defination of Angular Measurements, Classifications of Angle Measuring Instruments,

Angular Measurements: - The angle is defined as the opening between the two lines when they coincide at one point. The basic unit for the Angular measurement is Degree (°). If a circle is divided into 360 equal parts by a line passing thru the centre. Then each part can be called as a Degree (°).

Classifications of Angle Measuring Instruments:-  Line Standard Angular Measuring Devices:- • Protractors • Universal Bevel Protractor  Face standard Angular Measuring Devices:- • Sine Bar • Sine Centre  Measurements of factories:- • Sprit Level • Clinometers  Angle Comparator:- • Autocollimators • Angle Dekkor