Vintage Tube Electronics

Posts Tagged ‘Precision 10-12’


Posted on February 19, 2011 - by

Precision 10-12 Tube Tester

Precision 10-12 Case

This is a very nice newer model 10-12. The serial number has a “D” prefix character, and you can see the difference in the knobs used on the deck. The electronics appear to be the same as the older style 10-12s.


Posted on February 19, 2011 - by

Precision 10-xx Solid State Prototype?

Precision 10-xx Prototype

Does anyone know anything about this tube tester?

I believe it is a prototype Precision 10-xx that never saw production.  The meter is from a 10-12 tester.  The power supply uses a top hat solid-state rectifier instead of a #80 tube.  I can test tubes on this unit using the test data from a 10-12 tube tester.

The buttons for “W”, “X”, “Y”, and “Z” are individually pushed to make the connections to the tube rather than the lever switches like on the 10-12.  There is a knob that is pulled to clear the pressed buttons.

There is a “Gas” pushbutton that is not connected.  There must have been plans for a gas test in this tube tester.  A compactron tube socket has been added.

I would appreciate any information that anyone has about this tester. Email me at dlandon@vintagetubeelectronics.com  if you know anything about it.


Posted on February 19, 2011 - by

Precision 10-12 Tube Tester

Precision 10-12 Case

This is a very nice older model 10-12.  It is in excellent condition. The meter movement was replaced with a newer meter movement.  The meter indicator is a pointer, rather than a line indicator.  The dial face attached with the same mounting holes.  This kept the unit as original as possible.  I even have the original warranty card for this tester.