No. lil 7S7. 



Technical Voltmeters and Ammeters. 



909 



61 769. 1 : 5. 



61 776. 1 : 5. 



61 784. 1 



I Eange 12.5 



List No. 61,755 *.,,<> 



meters \ Price 4 5 4 5 



( Eange 1.5 



List' No. 61,761 



meters \ Pl . k , e 4 5 Q 



Dead Beat Precision Instruments, Deprez-d'Arsonval system, for Direct Current only, with 8 d - 

 knife-edge pointer and mirror scale, Figure. 



75 125 250 12.5 and 125 125 and 250 volts 



61,756 61,757 61,758 61,759 61,760 



4.6.0 4.10.0 5.2.0 5.2.0 



15 30 50 75 100 amps. 



61,762 61,763 61,764 61,765 61,766 

 4.5.0 4.8.0 4.8.0 4.10.0 4.12.0 



Instruments with different ranges, also Ammeters with external shunt, quoted for on application. 



Compare also Universal Galvanometer No. 61,362, p. 885. 



Series Resistances for Precision Voltmeters, Figure, for increasing the range. 

 Maximum Range 15 75 150 200 250 300 600 750 volts 



List NO. 61,767 61,768 61,769 61,770 61,771 61,772 61,773 61,774 

 Price 1. 2. 1. 2. 1. 6. 1. 8. 1. 8. 1. 10. 1. 18. 2. 10. 



Each Series Resistance can be divided up into as many as five ranges. 

 61,775. Extra Price for each subdivision 0. 9. 



61.776. Dead Beat Precision Voltmeter, Deprez-d'Arsonval system, for Direct Current only, 

 Figure, can also be used for measuring insulations with the working voltage; with 



three ranges, 0120, 0240 and 480 Volts i 2. 6. 



61.777. Dead Beat Precision Volt- and Ammeter, Deprez-d'Arsonval system, for Direct Current : 



only, Figure, with six ranges, 0.15, 1.5 and 15 Amps.; 3, 15 and 150 volts . . . 12. 10. 



Shunts, of Manganin, for above, with leads. 



Range 30 75 150 amperes 



List No. 61,778 61,779 61,780 



Price 2. 0. 3. 0. 3. 6. 



Precision Hot Wire Voltmeters for Alternating and Direct Current, Figure. 



Range 5 :W 75 125 250 6 and 120 125 and 250 volts 



List Xo. 61,781 61,782 61,783 61,784 61,785 61,786 61,787 



Price 5. 6. 5. 6. 5. 12. 5. 12. 6. 0. 6. 6. 6. 10. 



<]. 40', 41 K, 56 "', 

 5524, 39"", 38 r. 



