Lewis Box / MG Instruments

[Richard Fisher]

I've recently acquired a battered ammn box for the Lewis mags. I bought it as they were converted for use as the Mk. I MG Instruments box.

I know the description of how (thanks to Kevin in Oz) but there are some drawings referenced. Failing a trip to the Royal Armouries, does anyone have any pictures of information on how they were converted?

Thanks,

Richard