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341 How To Read a Ruler: Ruler is a tool which is used in geometry, sewing, engineering, architect and construction we use ruler for measuring length of things. Ruler is made from different material such as wood, metal, plastic and some ruler made from flexible material such as measuring tape which is use for measuring cloths and generally use in making dress and used by fashion designers. Ruler has two types of marking first type has inches marks and second type has centimeters (cm) and millimeters (mm) measurement which known as metric ruler. Measurement is not only required in professional field but also needed in daily life for example, in you “DIY” projects, building bird house or sewing projects and here we will learn to read an inch ruler and a metric ruler.

## Points Need To Know While Measuring With Ruler • Keep in mind that the inch ruler is with fractional division, for example – 5 1/2 inches and the metric ruler is with decimal division for example – 5.7 cm.
• Read ruler from left to right side.
• Start measuring thing from 0, for example – if you measuring paper then place ruler on paper likewise that one end of paper touches “0” number, it must not start from “1” number.

### How To Read Ruler Inches Generally inch rulers are 12 inch long, on inch rulers it shows 12 longest lines which denotes inches, 12 inch is equal to 1 foot. One inch is divided into 16 lines, if you see closer the ruler you will note that between every inch you will see 4 size of lines; first is longest line which denotes inch (for example – you will see longest line on above numbers such as 0,1,2,3,4,5,6,7,8,9,10,11,12), then there is longer line which is midway between each inch number which denotes half of an inch (for instance – you will see long line exactly in mid of an inch), there is long line which is in midway in between each 1/2 inch line that denotes 1/4 of an inch and there is short line on ruler which is in midway in between each 1/4 inch line that denotes 1/8 of an inch.

### How To Read An Inch Marks • Standard size of inch ruler is 12 inch long, always read inch ruler from left to right.
• Longest line on ruler denote inch (0 to 1 cm is equal to 1 inch), suppose you want to measure paper, put left side of the ruler on top of paper and then mark where paper ends, for example – if paper end on a number such as (1,2,3,4,5,6,7,8,9,10,11,12) or suppose if paper end on number 10 then it means paper is 10 inch long.

### How To Read 1/2 Inch Marks

• Longer line which is in midway between each inch number which denotes 1/2 of an inch, in totality 1/2 inch mark lines are 24 on 12 inch long ruler.
• First longer line between 0 to 1 signify 1/2 inch.
• If you want to measure box length, place one end of ruler left side on the box and mark where box edge ends, suppose box edge end in halfway between 8 to 9 inches mark, it means box is 8 and half inch long.

### How To Read 1/4 Inch Marks

• Long line which is in midway in between each 1/2 inch line is denotes 1/4 of an inch, in simple words 1 inch divided into 4 parts.
• First long line between 0 to 1 inch signify 1/4 inch and then second long line between 0 to 1 inch signify 2/4 inch (it also denotes 1/2 of inch) and third long line between 0 to 1 inch signify 3/4 inch and last long line between 0 to 1 inch signify 4/4 (it also donates 1 inch).
• Suppose you want to measure a shoes length, place ruler on left side of the shoes and mark where shoes end, if measure end in midway in between first long line between 5 to 6 inches mark it means shoes size is 5 and 1/4 inches.

### How To Read 1/8 Inch Marks

• Short line on ruler which is in midway in between each 1/4 inch line that denotes 1/8 of an inch, between each inches there are 8 small line of 1/8 marks.
• First small line between 0 to 1 inch signify 1/8 inch, second small line between 0 to 1 inch signify 2/8 inch (it also denotes 1/4 inch), third small line between 0 to 1 inch signify 3/8 inch, fourth small line between 0 to 1 inch signify 4/8 (it also denotes 1/2 inch), fifth small line between 0 to 1 inch signify 5/8 inch, sixth small line between 0 to 1 inch signify 6/8 inch (it also denotes 3/4 inch), seventh small line between 0 to 1 inch signify 7/8 inch and eighth small line between 0 to 1 inch signify 8/8 inch (it also denotes 1 inch).
• Suppose you want to measure the length of a bottle and measure end on fourth small line between 11 to 12 inches mark it means bottle size is 11 and 4/8 inches (it also writes as 11 and 1/2 inches).

### How To Read 1/16 Inch Marks

• Between every inch dived into 16 lines, first line between 0 to 1 inch shows 1/16, second line is 2/16, third line is 3/16, fourth line is 4/16 (it also denotes 1/4 inch), fifth line is 5/16, sixth line is 6/16 (it also denotes 3/8 inch), seventh line is 7/16, eighth line is 8/16 (it also denotes 1/2 inch), ninth line is 9/16, tenth line is 10/16 (it also denotes 5/8 inch), eleventh line is 11/16, twelfth line is 12/16 (it also denotes 3/4 inch), thirteenth line 13/16, fourteenth line is 14/16 (it also denotes 7/8 inch), fifteenth line 15/16 and sixteenth line is 16/16 (it also denotes 1 inch).
• Suppose you want to measure the length of a wire and measure end on fifth line between 9 to 10 inches mark it means wire length is 9 and 5/16 inch.

### How To Read Metric Ruler

Generally metric ruler has standard measurement which is based on the international system of units, commonly metric ruler is 30 centimeters, there are different types of metric rulers available, some ruler has centimeters (cm) and millimeters (mm) measurement on one edge only and some rulers has centimeters (cm) and millimeters (mm) measurement on one edge and on other side of it shows “inches” measurement. In between cm mark there are 10 smaller marks which are millimeters (mm), 1 cm equal to 10 mm; while reading measurement in metric ruler it will write in decimal for example – 1/2 cm write as 0.5 cm.

### How To Read Ruler in CM (Centimeter) • Firstly, always read ruler from left to right.
• Longest line on ruler are denotes cm (0 to 1 cm is equal to 1 cm), suppose you are measuring a length of book, then put left side of ruler on top of book and then note or mark on ruler where book end, for example – if book end on 10 then your book length is 10 cm.

### How To Read Ruler in MM (Millimeter)

• Short line between numbers are denotes millimeter, in ruler 300 short lines are there and 1 small line denotes 1 mm, so 300 mm length is equal to 30 cm.
• Suppose you are measuring diameter of coin, put ruler on left side of the coin and mark where coin end, for example – if you marked 5th small line between 0 to 1 cm then it means coin diameter is 0.5 mm or if you want to measure your cell phone cover, then put ruler on left side of the cell phone cover and mark where cell phone cover end, suppose you get measurement on 9th small line between 7 to 8 cm mark, it means your cell phone cover is 7.9 mm long.

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