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Explain the various order of geometrical irregularities on the surface? Write the advantages and disadvantages of the stylus probe type instrument?

Metrology Engineering, Uncategorized / By /

 various order of geometrical irregularities on the surface: When the metal is machined by some process, it cannot be perfectly finished and hence irregularities are present on it. There are some geometrical irregularities on surfaces can be classified into various orders. 1. First order: These irregularities are formed in the machine, due to inaccuracies, this …

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What is Comparator and classification and uses of Comparator

Metrology Engineering, Uncategorized / By /

What is a Comparator: It is a precision measuring device used for comparing the dimensions with that of working standards. It works on the principle of relative measurements. It does not measure the actual dimensions but indicates how the size of the part differs from the working standards. The readings are executed by suitable arrangements. …

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Sigma Comparator construction and working

Metrology Engineering, Uncategorized / By /

Construction and Working of a Sigma Comparator: Sigma Comparator: In this article we will learn a bout Sigma Comparator. What is Sigma Comparator. Construction of Sigma Comparator, Working of Sigma Comparator. It has different types of parts to combine and form a sigma Comparator. There are slit diaphragms, plunger, flexible strips, Y-type forked arm, driving drum, pointer spindle, fixed …

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Difference between Mechanical Comparator and Electrical comparator

Metrology Engineering, Uncategorized / By /

The difference between mechanical Comparator and electrical Comparator is as follows: MECHANICAL COMPARATOR: The Mechanical Comparator has more number of moving parts.  Due to more moving parts present in this system there is a high rate of wear and friction. Mechanical comparator is not high accuracy. Readings of this Comparator do not affect by variations …

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Explain LVDT and working of LVDT with Diagram

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 working of  Linear Variable Differential Transformer (LVDT): A Linear Variable Differential Transformer (LVDT) consists of one primary winding and two secondary windings with the equal number of turns wound on a cylindrical former. The two secondary windings are connected in series opposition and are placed identically on either side of the primary winding to which an …

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Thread Micrometer and measurement method of thread micrometer

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Thread Micrometer: Thread micrometer is used to measure the pitch diameter of the screw thread and it shows the variation in the drunken thread. It is equal to the ordinary micrometer, it is provided with the contact point. It has two ends one is connected with a spindle, and another end has a fixed anvil …

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Sampling length in surface roughness measurement

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Explain About Sampling Length in Surface Roughness Measurement: It is defined as a length over which the parameter to be measured is significant consisting the desired and relevant information. It is measured by dividing the data into equal sample lengths in surface roughness. Sampling length plays a prominent role in surface roughness measurement.it is a …

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