I find it hard to read the dial on my AA S410 air gauge. They used to use a coloured background (red, green yellow) but now a finely spaced dial with the needle behind the dial face is used.
The nearest I can find to that is the Daystate one to fit Air Ranger, Huntsman & Wolverine stocked by John Knibbs. It looks like it will fit but does anyone know the screw size. I think AA is 1/8" BSP.
Cheers!