I bought the Cammenga 27 to replace an old Silva baseplate compass that I now keep in my car's emergency kit. Why I purchased this particular compass: 1:50000 scale along an edge, non-oil-filled compass card case, robust construction, reasonable price and it's hi-vis pink colour. It's hard to find something that blends too well into natural surroundings plus there's a good cause attached. All good. The compass card is accurate and sensitive so be aware of any metal or batteries around you. My only complaint is that Stapleton's doesn't carry a line of Kasper & Richter compasses so I could add one of those to my potential collection. C'est pas grave!