For spares and repairs. It works as a compass, and it's pointing north. The view finder is also all good, and you can see thought it and also see the compass dial. There is a missing a screw on the side that is used to lock the adjustment ring. It is very scratched and cant see the date any more, but you can still see - Cruchon & Emons. It is marked on the front with Verners patent VII. No case. Nice item and great for any collector. Please study the photos and ask any questions.