A student measured the length of a rod and wrote it as `3.50cm`. Which insturment did he use to measure it?

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it?

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

A student measured the length of a rod wrote it as 3.50 cm. Which instrument did he use to measure it ?

A student measured the length of a wire and wrote it as 2.50 can which instrument did he/she use to measure it?