forward vernier scale in engineering drawing

jodyparty41228 April 11, 2022 drawing , forward , in , vernier Comment

Engineering drawing is called the UNIVERSAL language of engineers. The 20 scale is used for scales such as 1 inch 2 feet 1 inch 20 feet and 1 inch 200 feet.

Engineering Drawing Vernier Scale Example 1 Youtube

Backward Vernier Scales If VSD MSD then the vernier scale is called a backward vernier scale.

. The vernier scale was invented in. It combines the functions of T-square set-squares scales and protractor. To test him the instructor asked him to draw a plain scale for the drawing and show an elevation for 98 m.

Its vernier scale division represents 9 cm. It is drawn to 125 scale. Construct the scale and mark on it a distance ofO91m.

It consists of two parts a primary scale and a vernier. 15cm of a vernier scale represents 1cm. Show a distance of 456 meters.

Since the vernier scale pictured above is constructed to have ten divisions in the space of nine on the main scale any single division on the vernier scale is 01 divisions less than a division on the main scale. A vernier scale enables an unambiguous interpolation between the smallest divisions on the main scale. In Forward Vernier the length of one division of the Vernier scale is smaller than the length of the one division of the main scale.

On this scale show distance 137km. It is drawn to 125 scale. To set off dimension.

Construct a backward reading vernier scale of RF 148 to show decimetres cm and mm. Sep 12 2018 DrRGM PROFMECH UNIT 1 ENGG GRAPHICS 22. A student submitted the assignment sheet where a vertical pole of height 198m was elevated as 396 cm.

The LC of a forward reading vernier scale is 1 cm. Use of scale- 1. Its vernier scale division represents 9 cm.

It is drawn to 125 scale. To draw full reducedenlarged size of drawing. At A draw a perpendicular and step-off.

Wavy continuous narrow line drawn freehand is used to represent break of an object. P is a point 40mm from OA and 50mm from OB. The scale should be capable of reading upto 12 decimeters.

Divide the first part A0 into 10 equal divisions. I 1 yard 1 foot and 1 inch ii 7 yards 2 feet and 9 inches and iii 10 yards 10 inches. Construct the scale and mark on it a distance ofO91m 13.

In case of direct vernier both scales namely vernier and main move in the same direction and vernier divisions are. Draw a Vernier scale of 172 to read inches and long enough to measure 12yards. Example 56 On a map the distance of 11 kilometres is shown by a 22 cm long line.

Construct a backward reading vernier scale of RF 148 to show decimetres cm and mm. 9 parts of dm length and divide that in to 10 equal parts each part showing 09 dm or 9 cm of length. Main scale Draw a line 16 cm long.

Distance 1 25 X 4 X 100 16 cm CONSTRUCTION. The LC of a forward reading vernier scale is 1 cm. Vernier scales Simple scales A plain scale is simply a line which is divided into a suitable number of equal parts the first of which is further sub-divided into small parts.

Draw a vernier scale of RF 1 25 to read centimeters upto 4 meters and on it show lengths 239 m and 091 m 9 8 7 6 5 4 3 2 1 99 77 55 33 11 011 0 1 2 310 SOLUTION. Two straight lines OA and OB make an angle of 75 between them. Length of the scale 3200 x 6 m 9 cm.

Plans drawn in 10 scale may show scales such as 1 inch 10 feet 1 inch 100 feet. Construct the scale and mark on it a distance ofO91m. It is the ratio of the length of the drawing on the chart to the actual length of the object.

15cm of a vernier scale represents 1cm. What is meant by Representative Fraction RF for a scale. Construct a backward reading vernier scale of RF 148 to show decimetres cm and mm.

There are two types of Vernier- a. Scales on drawings 4-3. 15cm of a vernier scale represents 1cm.

There are 40 msd on the scale. Its vernier scale division represents 9 cm. It is used to represent either two units or a unit and its fraction such as km m and dm etc.

These scales like diagonal scales are used to read to a very small unit with great accuracy. The vernier or vernier scale is an additional scale. Forward Vernier Scales If MSD VSD then the vernier scale is called a forward vernier scale.

Types of scales i Plain scales ii Diagonal scales Principle of diagonal scale iii Comparative scales i Inch scale ii Comparative scale i Scale of miles ii Scale of kilometres iv Vernier scales Principle of vernier Least count of a vernier i Forward vernier ii Backward vernier v Scale of chords. How to draw vernier scale in engineering drawing Scales Definition- The proportion by which actual size of object is enlarged or reduced on drawing is called scale. For lengths RF Length of drawing actual length.

Length of scale RF X max. The scale should measure up to 6 meters. Show the following distances on it.

N-1 divisions of the main scale are equal to the n division of Vernier in Forward Vernier. Type 011Continuous Narrow Freehand Lines 9. Divide it in to 6 equal parts.

The forward Vernier scale of this RF to read dam measure up to 4km. The primary scale is a plain scale fully divided into minor divisions. Each of these parts will show a length of 11 dm or 11 cm if we make use of direct or forward vernier instead of retrograde or backward vernier than in that case we need to take n-1 ie.

Scales Plain scales Diagonal scales and Vernier scales Theory Questions 1. To measure the length distance dimension. The civil engineers scale divides 1 inch into equal decimal units of 10 20 30 40 50 60 and 80.

There are 40 msd on the scale. The LC is obtained by the relation LC VSD MSD. Obviously LC MSD VSD.

In direct Vernier the Vernier scale. There are 40 msd on the scale. Representative fraction RF or scale factor- The ratio of drawing size of an.

Draw a line AB 9 cm. Direct Vernier or Forward Vernier.

Vernier Scales Youtube