... my method of aligning by tangents may not be precise enough. Attachment: attach_2809_3402_trial_hv_entrance _wi_2019_02_18_1630_43.box 196 posted: 27 Mar 2019 12:07 from: Martin Wynne Hi Geoff, Many thanks for the file. I can't imagine how long it took to create all that -- I hope you have kept good backups. There is an option to keep them here if you wish, see: http://85a.co.uk/forum/view_category.php?id=4 Some parts of it look a bit unlikely to me, for example: 2_270657_170000000.png I don't know how you are going to get two V-crossings so close together, and attach a moving switch to them. Do you have a photograph of the prototype? Are you working over a background map? If you say the prototype location we can probably import a map from NLS. I'm guessing the hv in your file name is either High Voltage or Holborn Viaduct? My telepathy machine has had 20 years experience on here. There are excellent 60"/mile maps from the 1890s available for that location ...