==Gradient== 

 The article contains the following... 
 Maximum Steepness: 64% 
 ...where does 64% come from? 
 The official site says... 
 "When finished, the track measured 201 ft long, with a vertical rise of 111ft. This gave the railway an incline of 33°, the steepest in England." 
 The sign at the top of the railway in Bridgnorth also says 33°; I've also checked the maths and I get 33.5°