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Precision 815 Tube Tester

Precision Apparatus Co
 

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Precision 815 (Giant Meter) Tube Tester

A scarce model, the Precision 815 is a rarely seen large counter top version of the standard size model 800. The meter is over 8" diameter and the unit stands 24" tall. The precision line of tube testers are among the finest of emission testers (my opinion). Features Precision's cathode conductance test method (their version of an emission test).  This was made in the early-mid 1930s and will test all consumer tubes from the mid 1920's - to around 1935 (4, 5, 6 & 7 big pin + octal tube of the era.

<  Operating instructions are available for the  above & other models, click on image for more info.

 
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the instrument has been SOLD, photo reference only