What is the working principle of angle Dekkor?
There is an illuminated scale in the focal plane of the collimating lens. This illuminated scale is projected as a parallel beam by the collimating lens which after striking a reflector below the instrument is refocused by the lens in the filed of view of the eyepiece.
What is the principle of autocollimator?
The basic principle of an autocollimator is quite simple: one directs a collimated beam, which by definition has a small beam divergence, to a flat reflecting object (a mirror) and detects the angular position of the reflected light, which typically needs to be close to direct back-reflection.
Is angle Dekkor an optical instrument?
Angle Dekkor : an optical instrument used for the measurement of small angular differences. Angle Dekkor can be used to measure surface flatness. …
What are protractors used for?
GeometryProtractor / Calculation supported
What is not applicable for angle Dekkor?
12. Which of the following is not true for angle dekkor? Explanation: It is a type of collimator and contains a small illuminated scale. This is less precise instrument than autocollimator but it has wide field of application for general angular measurement.
How is angle greater than 90 measured?
How angle greater than 90° is measured? Explanation: Versatility of angle gauges increases when used with a square plate. Square plates with angle gauge can measure angle greater than 90o.
What are applications of autocollimator?
An autocollimator is an optical instrument that is used to measure small angles with very high sensitivity. The autocollimator has a wide variety of applications including precision alignment, detection of angular movement, verification of angle standards, and angular monitoring over long periods.
What is the use of angle plate?
An angle plate is a work holding device used as a fixture in metalworking. Angle plates are used to hold workpieces square to the table during marking out operations. Adjustable angle plates are also available for workpieces that need to be inclined, usually towards a milling cutter.
What is purpose of Prism in angle Dekkor?
Our ANGLE DEKKOR is widely used in engineering colleges. APPLICATIONS: It is basically a comparator where we compare optical elements like slabs and all types of prisms for flatness and angles of prism in vertical plane respectively. It is used for very small angle measurements of the order of seconds.
Which is not applicable for angle Dekkor?
12. Which of the following is not true for angle dekkor? Explanation: It is a type of collimator and contains a small illuminated scale. The instrument measures by comparing the readings obtained from a standard.