What is an optical instrument? - Metrology & Quality Control
Mechanical Engineering (MCQ) questions and answers
Metrology and Quality Control
Q. Which among the following is an optical instrument?
- Published on 07 Aug 15
both a. and b.
none of the above
ANSWER: both a. and b.
Fluid Mechanics (
Manufacturing Processes - 1 (
Manufacturing Processes - 2 (
Material Science (
Theory of Machines - 1 (
Metrology and Quality Control (
Theory of Machines - 2 (
Heat Transfer (
Hydraulics & Pneumatics (
Basic Mechanical Engineering (
Dynamics of Machinery (
Engineering Metallurgy (
Design of Machine Elements - 1 (
Turbo Machines (
Mechanical System Design (
Engineering Mechanics (
Strength of Materials (
Design of Machine Elements - 2 (
-Posted on 13 Oct 15
Angular dekkor and autocollimator are optical instruments. Angle dekkor is used to measure variations in angular settings. It consists of a collimating lens, prism, microscopic eye piece, glass screen engraved with illuminated scale, etc. This instrument compares readings obtained with slip gauges in contact with the work piece and the zero reading obtained from angle gauge block setup.
Autocollimator is used to measure small angular tilts. It is also used to test alignment, straightness and flatness of the surfaces. An autocollimator combines telescope and collimator using a single objective lens and converts into single instrument. A beam splitter is used separate beam paths.
Autocollimators are used to align components and measure deflections in mechanical or optical systems. Air currents between autocollimator and target mirror cause fluctuations in autocollimator readings. Accuracy of the readings is also affected by flatness and reflectivity of the target mirror.
Post your comment / Share knowledge
Enter the code shown above:
(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)