Anyone heard of Sangamo KBA 01 meter?

debrag

I have this for gas and I'm confused as to how to read it.

npower state:

Key meter
Located on the front of your meter is a blue button. Pressing and releasing this button scrolls through your displays. Each screen can be identified by either a letter or a number depending on which type of key meter you have. The displays start from A and run through to the letter T or from the number 1 through to number 9.
After a few seconds the display will automatically reset to display A or 1 so you may need to repeat scrolling through the screens a couple of times to gain all of the information you are after. Scroll to H or 5 for your meter reading.

I get screens but only one contains a number at the front which I think they are talking about but its 4 not 5.

I have a display at the top anyways so it that what I read? it is much higher than screen 4.