Wooden LNER ruler, used to measure spring scale deflection, marked "L.N.E.R Dynamometer Car Spring Scale Deflection in Tons, 3.3" 4.5" ", from Dynamometer Car, North Eastern Railway, No 902502, 1906.
Wooden Ruler from North Eastern Railway Dynamometer Car
Wooden LNER ruler, used to measure spring scale deflection, marked "L.N.E.R Dynamometer Car Spring Scale Deflection in Tons, 3.3" 4.5" ", from Dynamometer Car, North Eastern Railway, No 902502, 1906.
Wooden LNER ruler, used to measure mph over 20 seconds, marked "L.N.E.R Miles per hour over 20 seconds. Scale 1 foot = 1 mile", from Dynamometer Car, North Eastern Railway, No 902502, 1906.
Wooden Ruler from North Eastern Railway Dynamometer Car
Wooden LNER ruler, used to measure mph over 20 seconds, marked "L.N.E.R Miles per hour over 20 seconds. Scale 1 foot = 1 mile", from Dynamometer Car, North Eastern Railway, No 902502, 1906.