BK Precision CRT tester (470)

[Notimetolooz]

I guess you are questioning whether the tester is function correctly or whether your hookup is correct.
Have you used this tester successfully on a CRT recently?
A main problem is that you don't really know which CRT pin is which on this tube. Just because the CRT number is similar to the one in the book does not mean you have the socket connected correctly, or the voltages correct.

After studying the tester schematic it seems the emission is tested with the cathode and G1 connected together and using the voltage on G2, the meter reading being related to the current flowing.
Many times the cut-off bias is based on the G1 voltage required to cut off the cathode current using a set G2 voltage, similar to the way a CRT is actually operated. This tester uses a set G1 voltage and finds the G2 voltage that results in the current decreasing.
The voltage are with respect to the cathode voltage by the way.

I still think the best approach is to measure the socket voltages in the monitor, since you know what they should be. If those voltages are correct and you have no raster then the CRT is at fault. The monitor socket voltages most probably should be with respect to the monitor circuit ground. From your posted info I could guess that the CRT pin 2 is the cathode and pin 5 is G1. Whether pin 6 or 7 is G2 I don't know.
You are aware I suppose that many monitors blank the screen when they do not receive the proper signals from a computer, in that case one or more voltages would be very different.