Here up for bid I have a Precision Electronamic tube tester,model 10-60.This is the top of the line model made by Precision.This tester, test's tubes,transistors,crystal diodes,voltage regulators and picture tubes.It will test just about any tube that was made including the old 4 pin.It comes with the manual and several data books including data for transistors and diodes.Everything seems to be working fine.I checked several tubes that were known to be good as well as some bad ones and it tested properly.The case is in really nice condition as well as the unit. As with all vintage electronic equipment this is sold As-Is.   It will be insured in case of delivery damage.The tubes that are being tested in the photos are a 12AX7 and a 6L6. I also tested a 45,47,12AU7 and several others.I broused through the tube data book and I found data for all of the old radio tubes as well as all of the tubes that I know of for guitar amps.I was really surprised how easy it is to set up and test tubes.I am curently using a TV 7 tester and really came close to keeping this one as a backup and indeed I will if it does not sell.