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Jolting Apparatus: The Jolting Apparatus is employeed and working  for arrangement of standard rectangular examples assuming 40 x 40 x 160mm of portland and pozzolana cement mortar for deciding transverse Strength. Highlights and Benefits of Jolting Apparatus : ♦ Easy and speedy to begin ♦ Automatic capacity ♦ No consideration required amid test ♦ Easy cinching and unclamping of shape on table Particulars :  The shocking device comprises of a rectangular table inflexibly associated by two help arms to an axle at a level separation of 800mm from the focal point of the table. There is an anticipating drag with a plane face on the lower face of the table underneath which is a stop with an adjusted upper surface. The table can be raised and permitted to fall unreservedly on the stop by a cam which is associated with an engine and apparatus box through a V-belt and pulleys. The cam pivots at a rate of 60 rev./min. A stroke counter fitted with small-scale switch is...

Extensometer: An extensometer is an instrument that is used to measure changes in the length of an object.It is useful for stress-strain measurements and tensile tests. Its name comes from "extension-meter". It was invented by Charles Huston who described it in an article in the Journal of the Franklin Institute in 1879. Huston later gave the rights to Fairbanks & Ewing, a major manufacturer of testing machines and scales. There are two main types of extensometers: 1.contact  2.non-contact. Contact Extensometer: Contact extensometers have been used for many years and are also subdivided into two further categories. The first type of contact extensometer is called a clip-on extensometer. These devices are used for applications where high precision strain measurement is required (most ASTM based tests). They come in many configurations and can measure displacements from very small to relatively large (less than a mm to over 100 mm). They have the advantage o...