Rail key gauge, end, taper, thin end, left and right hand, for oak keys, for Great Western Railway No 00 bullhead rail, 1925. Rail key gauge 1925
Rail-key gauge, London & North Eastern Railway, steel gauge for rail keys "LNER Chief Engineers's Dept. July 1944 6R Key". Dimensions 196x91mm. Rail-key gauge, London & North Eastern Railway
Rail-Key Gauge, London & North Eastern Railway, steel gauge for rail-keys "L & NER NE Area. Gauge for standard key 85x95lb rail". Dimensions 188x58mm. Rail-key gauge, London & North Eastern Railway
Rail key gauge, end, taper, thick end, for Great Western Railway No 00 bullhead rail, 1930. Rail key gauge 1930
Railkey gauge, London & North Eastern Railway, steel gauge for rail-keys "LNER. NE. 6R Key & ". Dimensions 184x49mm. Railkey gauge, London & North Eastern Railway
Rail key gauges, BR, pair of steel gauges for removable wood keys. "British Railways Reversible Wood Key Drawing No. RE/PW/5004". Matched pair. R4553 for Large End/R4554 for Small End. Dimensions each 252x125mm. Rail key gauges