Sri Ramakrishna Mission Vidyalaya Polytechnic College, Coimbatore - 641 020

  What is a Prismatic Compass? A prismatic compass is a special type of magnetic compass used to measure bearings and angles between two points.  It's primarily used in land surveying, geology, and outdoor navigation. The compass operates by aligning the magnetic needle with the Earth’s magnetic field. The user then sights an object and reads the bearing directly from the graduated circle. This simultaneous viewing and reading make it more accurate than other compasses, especially in challenging environments like dense forests or uneven terrain.  Components of a Prismatic Compass The metal box of a prismatic compass serves as the protective casing for all the internal components.  It shields the compass from dust, rain, and physical damage during use in the field. The cylindrical design ensures that the compass remains stable while taking measurements, making it ideal for outdoor conditions. The magnetic needle is the heart of the prismatic compass.  It aligns ...

Instruments used for chain surveying             Classification of surveying:      Chain Surveying Compass Surveying   Plane Table Surveying   Tachometric Surveying Etc.     Instruments used for chain surveying: The various instruments used in chain surveying are as follows.     Chain   Arrows   Pegs   Ranging Rods   Offset Rods   Plumb Bob   1.  Chain:   Chains are used to measure horizontal distances. Chains are formed of straight links of galvanized mild steel wire called links. The ends of each link are bent into a loop hand connected together by means of three oval rings which afford flexibility to the chain.           The chains made of mind steel. The ends of the chin are provided with brass handles for dragging the chain on the ground. The outside of the handle is the zero point or the end point of t...

What is Plastering? Plastering is an age-old technique in the construction industry that involves applying a thin cover of plaster, a mixture of lime or cement, sand, and water, over the exposed surface of walls, ceilings, or partitions. The primary purpose of plastering is to provide a smooth and seamless finish to these surfaces, concealing brickwork, concrete, and other materials. While it might look purely aesthetic, plastering plays several vital roles in construction in terms of protection, durability, levelling and alignment of walls and ceilings.   Different Types of Plastering   There are several types of plaster and they serve various needs, environmental conditions, and aesthetic preferences. Let's take a look at some of the most commonly used types of plastering.     1. Cement Plastering     Cement plastering, often referred to as cement rendering, involves the application of a mixture composed of cement, sand, and water. This techniqu...

  What is flooring? Flooring refers to the finished covering that’s installed above your structural floor. This helps provide your space with a uniform walking surface, where different types of flooring can offer different benefits. For example, the type of flooring material you choose can have a different feeling underfoot. Some materials can be harder than others, while materials like stone can help keep your floors cooler in hot summers.   What are the different types of flooring materials available in India? There are many interesting flooring options to choose from to help you find the best flooring material for your space. Take a look at each of them in detail:  Concrete Cost-effective and rugged, concrete flooring is a must-have if you’re keen on getting an industrial-style aesthetic for your home Concrete floor designs are one of the most common types of flooring in India. It is a man-made concoction of cement, rocks, granite chips, and other materials, makin...