212 



OENTEAL SCIENTIFIC CO., CHICAGO, IT. 8. A. 



Model 1. 



Model 45. 



METERS, WESTON (CONTINUED). 



DIRECT CURRENT. 



METERS, PORTABLE, Model 45. These instruments are of sufficient accuracy for station -work 

 and general testing. The movement is completely enclosed in an iron case (which protects it 

 from stray magnetic fields), securely fastened in a wooden carrying box. This box is provided 

 with a hinge cover which protects the scale and binding posts. 

 Kos. 4602-6 Meters are provided with self-contained shunt. 

 No. 4608 Meter has an. external shunt. 



4600. MILLIAMMETER, range 0-100 ma. in 1.0 ma. divisions $31.25 



4602. AMMETER, range 0-5 amperes in 0.05 ampere divisions 31.25 



4604. AMMETER, range 0-15 amperes in 0.1 ampere divisions 31.25 



4606. AMMETER, range 0-25 amperes in 0.2 ampere divisions 31.25 



4608. AMMETER, range 0-50 amperes in 0.5 ampere divisions 31.90 



4610. MILLIVOLTMETER, range 0-50 mv. in 0.5 mv. divisions 31.25 



4612. VOLTMETER, range 0-5 volts in 0.05 volt divisions 31.25 



4614. VOLTMETER, range 0-15 volts in 0.1 volt divisions 31.25 



4616. VOLTMETER, range 0-150 volts in 1.0 volt divisions 36.90 



NOTE. Double Scale Voltmeters of the above- type will be furnished at a price of $6.25 in addi- 

 tion to the price of the highest range. 



METERS, PORTABLE, STANDARD, Model 1. These meters are adjusted and calibrated with the 

 greatest care, and when used properly give exceedingly accurate results. They are direct read- 

 ing, portable, permanent, and ' ' dead beat, ' ' and are, in fact, the recognized standard instru- 

 ments for laboratory and general testing. 



4626. AMMETER, range 15 amperes, in 0.1 ampere divisions, readable to 0.01 ampere 65.00 



4628. AMMETER, range 25 amperes, in 0.25 ampere divisions, readable to 0.025 ampere 65.00 



4630. AMMETER, range 50 amperes, in 0.5 ampere divisions, readable to 0.05 ampere 65.00 



4632. MILLIVOLTMETER, range 0-20 mv. in 0.2 mv. divisions, readable to 0.02 mv 50.00 



4634. MILLIVOLTMETER, zero center, range 10-0-10 mv. in 0.2 mv. divisions, readable to 0.02 mv. 50.00 

 4636. MILLIVOLTMETER, zero center, double range 10-0-10 and 100-0-100 mv. supplied with key by 



which either range may be employed 55.00 



Any of the above MILLIVOLTMETERS may be supplied with Shunts for ampere readings at an 



additional cost of 5.00 



4638. VOLTMETER, range 150 volts in 1 volt divisions, readable to 0.1 volt 55.00 



4640. VOLTMETER, double range, 150 volts readable to 0.1 volt and 15 volts readable to 0.01 volts. 



75.00 



4642. VOLTMETER, same as No. 4640, but with Reversing Key 77.50 



METERS, SWITCHBOARD, Model 24. These small round pattern meters are expressly designed 

 to meet the demand for good but law price instruments for use on switchboards. The total 

 diameter of the front is 6% inches and the total depth 4 inches. They are carefully designed to 

 secure the highest degree of durability and reliability; they are absolutely dead beat, and their 

 indications can be relied upon within 1%. The cases are finished in black japan and are neat in 

 appearance. 



4652. AMMETER, 0-10 amperes in .2 ampere divisions 18.75 



4654. AMMETER, 0-25 amperes in .5 ampere divisions 19.40 



4656. AMMETER, 0-50 amperes in 1 ampere divisions 19.70 



4658. VOLTMETER, 0-10 volts in .2 volt divisions 20.00 



4660. VOLTMETER, 0-25 volts in .5 volt divisions 20.00 



4662. VOLTMETER, 0-50 volts in 1 volt divisions 20.00 



4664. VOLTMETER, 0-130 volts in 2 volt divisions 20.65 



