For use as an accurate potential divider, ratio arm etc. This unit employs high stability metal film resistance elements having superior characteristics to traditional wire wound coils. It is equally suitable for a.c. or d.c. use. The individual decades are series connected, each having switched positions of 0 to 9, and are mounted in line with 4mm socket terminals linked to the ends of the chain. The top panel is clearly marked with the resistance value.
• Range: 9999 • Tolerance: ± 1.0% • Dimensions: 220 x 110 x 60mm E8L32177
B. Interscale Demonstration Meter • Versatile meter that can show a.c. or d.c.
• Highly sensitive moving coil galvanometer with accuracy of ± 2.5%
• Scale on both sides of the dial for class demonstration
• Easy observation of working parts • Basic sensitivity of meter is 5 mA, 100 mV f.s.d
A versatile demonstration meter that can be converted from a Voltmeter to an Ammeter on either a.c. or d.c. by the use of interchangeable dials (sold separately). Each dial fits through a slot in the side of the case and connects through four fixed 4mm sockets. The meter operates using a moving coil galvanometer housed within a plastic case allowing all working/moving parts to be observed through either side of the meter. Scales are marked on both sides making this unit ideal for class demonstration.