Every now and again something comes along that is just too nice not to stock. Here is such a thing -  the Runwell NJS Chainring Gauge. It's a simple thing - just a flat piece of steel with a hole in - but it's so nicely made and it makes checking your chainline a cinch. Self centring on your seat tube it has line and pointer to confirm if your chainring is at 42mm chainline. Comes in a nice little plastic wallet which confirms this is "IDEAL QUALIA" and "ABSOLUTELY MADE IN JAPAN".

By the way, two things came along at once - have a look at the Runwell Fixer NJS Chain Tool elsewhere on Hubjub.