These are devices for accurately measuring minute distances; modern gadgets are accurate down to one ten-thousandths of an inch.

It is an instrument used for

measuring electrical potential difference between two points in an electric circuit.

It have long been made from different materials and in multiple sizes. Some are wooden. Plastics have also been used since they were invented; they can be molded with length markings instead of being scribed. Metal is used for more durable rulers for use in the workshop;

This familiar device is

spring-loaded so that the tape retracts into its metal or plastic case when not in use. It is also known as a flexible rule.

It is an electronic measuring instrument that combines several measurement functions in one unit. It can

measure voltage, current, and resistance.

It is a piece of electronic test equipment used to determine the presence of electricity in a piece of equipment under test.

10 inches - ________ cm

Convert

15 dm - _______ cm

Convert

10 feet - _________ inches

It states that the current flowing in an electric circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the material.