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. ...

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 ...

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

Het uitstekende deel bovenaan dit masker was oorspronkelijk gedecoreerd met pluimen. Verder werden rode graantjes ter ...

Antropomorf masker met dwars uitgewerkt kapsel, raffiabaard, en een witte polychromie.

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. ...

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

A voltmeter is a device used to measure electrical voltage. The value is indicated in volts. ...

This vacuum meter was used for measuring pressure below atmospheric pressure.

Dit rood-witte masker heeft een gebombeerd voorhoofd, open mond met gevijlde tanden en schijfjes die oren ...

Dit masker werd gebruikt bij initiatieriten. Eigen aan deze antropomorfe maskers zijn de rode kleur (tukula), ...

High-voltage thyratron filled with mercury vapour. A thyratron was mainly used to switch large electrical currents. ...