What's this for? (wheel brace for jack)

[IIA]

II found this on ebay advertised as "LANDROVER DISCOVERY MK1 SCREW BOTTLE JACK C/W HANDLE AND WHEELBRACE" - what is the wheelbrace for?
http://i.ebayimg.com/images/g/Oy8AAOSwZ1BXcS9t/s-l1600.jpg

[mearstrae]

A wheel brace is what we Americans call a lug wrench, for taking off lug nuts. This setup looks in good shape, but what it's for I have no idea. Looks like the kit I have in my old Ford van. I've never seen anything like this in a Discovery of any vintage, they all use hydraulic bottle jacks and a "Brace" that doesn't also have a hub cap remover and folds up...

'99 Disco II
'95 R.R.C. Lwb (gone...)
'76 Series III Hybrid 109
'70 Rover 3500S