An ammeter or current meter is a measuring instrument that measures the magnitude of electric current. ...

An ammeter or current meter is a measuring instrument that measures the magnitude of electric current. ...

Links op het afgeronde doek is Maria met het Kind weergegeven. Ze draagt een opvallend rode ...

An ammeter or current meter is a measuring instrument that measures the magnitude of electric current. ...

A wattmeter is an analogue electrical measuring instrument used to calculate electrical power. This wattmeter was ...

A wattmeter is an analogue electrical measuring instrument used to calculate electrical power. This wattmeter was ...

A wattmeter is an analogue electrical measuring instrument used to calculate electrical power. This wattmeter was ...

An oscilloscope is an electronic measuring instrument that can effectively visualise cyclic variations in an electrical ...

The albumin meter was used to test the level of the protein albumin in urine. The ...

The albumin meter was used to test the level of the protein albumin in urine. The ...

This analogue moving coil device was used in an electronic clock. The time corresponded to an ...