 Whishaw says
The main line, which runs from the Edinburgh station to South Eske, is level for about half its length; and the remainder has an inclination of 1 in 234, the whole distance being miles … The Leith branch is level for about one-third of its length; and the remaining portions have inclinations of 1 in 300 and 1 in 69 respectively, the whole length being 4 miles … The Musselburgh branch [i.e.Fisherrow] is altogether on an inclination of 1 in … In the main line we counted seven bridges over the railway, four bridges under, six level road-crossings … the main line being double throughout … There is one tunnel 572 yards in length, which is on the Edinburgh inclined plane … the Tunnel is lighted by twenty-five gas lamps … The gauge is 4 feet 6 inches … the rails are of the fish-bellied form, weighing 28 lbs to the yard … the whole way is laid with freestone blocks … Near [South Eske] station is a long wooden bridge, which carries the Marquess of Lothian's railway over the river Eske.Whishaw says
The inclined plane near the station at Edinburgh has an inclination of 1 in 30; it is 1130 yards in length, the upper part being straight, and the lower part considerably curved.