I have the Bike Fit branded one. The first one came cracked in the mail but they quickly mailed out a replacement and I haven't had any problems with it since. It does have markings to also measure stem and handlebars. The hardest part for me is finding someone around the house to measure me when I want to double check my fit. It probably only gets used a couple times a year but I am happy with it. The markings are very easy to read. It also comes with an instruction manual on the different angles to measure but I know that info is readily available online too.