![](https://coimages.sciencemuseumgroup.org.uk/299/498/large_thumbnail_1983_7567__0001_.jpg)
Rail profile
Rail profile, working, simplified side, for BS 75 R flat-bottomed rail, ummarked but probably Crown Agents No.5/24, in original envelope.
Rail profile, working, simplified side, for BS 75 R flat-bottomed rail, ummarked but probably Crown Agents No.5/24, in original envelope.