Measurements of Length

Which of these is the standard unit for measuring length?

What are the other units of length other than kilometre?

What is a handspan?

Handspan is used to measure weight.

While measuring the length of a knitting needle, the reading of the scale at one end is $3.0 \mathrm{cm}$ and at the other end is $33.1 \mathrm{cm}$. The length of the needle is _____ $\mathrm{cm}$.

Write the symbol for the unit centimetre.

The length of a curved wooden stick can be measured using a metre scale.

Name the instruments used to measure length, temperature and weight. 

Which of the following ways of measuring the length of a classroom is the easiest and accurate?

Which of the following types of motions is/are correct about the motion of different components of a sewing machine?

Three rulers, A, B and C are shown below.    
    
Which of these rulers can be used to measure the length of sticks longer than 1 cm and shorter than 10 cm?

Raju tries to measure the side of a block using a ruler. 
Which of the following is a correct way of measuring the side of the block?
 

Four pieces of wooden sticks A, B, C and D are placed along the length of 30 cm long scale as shown in the figure. 



Which of these sticks is the shortest?

A piece of ribbon measured 25 cm after it was folded a few times. Which of these statements is true its actual length?

The figure below shows a ruler.

Which of the following lengths is the above ruler most suited to measure?

Give an example of the situation where:
Accurate measurement is not necessary and only estimation is required. Give reasons.

The unit used for measuring length in earlier times.

Name the distance between the tip of the thumb to the little finger.

Name one device with which the length is measured. 

(Choose one from these: Balance/ Metre scale/ Thermometer)

_____ is used to measure length.