Oven Temperature

I'm getting to be pretty sure my built in oven thermometer isn't correct (i think it runs low) and i'm planning to start bread baking.  With bread and baking in general accurate temperate is a must, so I ordered this http://www.amazon.com/gp/product/B003EDY97U/ref=ox_ya_os_product thermometer today.  I'll be back once its delivered to report on it and my oven.   I'm also planning to get one of the laser instant temp readers.  That lets you take an oven temp (but you have to open to oven door) and you can get instant reads on oil temperatures for frying too.  They only run about 20 bucks.