The Easy-Read Digital Meter by Unilab can be combined with the Easy-Read Attachments to create an Ammeter Milliammeter Voltmeter or Millivoltmeter. Excellent for general circuit work.Use the meter to measure the current through the Helmholtz Coils. The attachments are colour-coded and their sockets are arranged to help students grasp the concepts of shunts and multipliers.Input impedance: 100kOResolution: 0.01Accuracy: ±2%Mass: 0.25kgDimensions: 95mm x 90mm x 55mmShunts available to purchase separately include:B8H30919 - 20V d.c.B8R02651 - 20mA d.c.B8H30671 - 20V a.c.B8H30737 - 10A d.c.B8H31067 - 1A/10A a.c.Supplied with a PP3 battery that gives a useful life of over 1000 hours the Easy-Read displays 'LO BAT' when the battery needs to be replaced.