I've managed to generate them entirely in XL and word, so there is no hand drawing involved and I can publish them as PDFs.
At present I have four available covering the GU from Brentford to Braunston (that's two), through London from Bulls Bridge to Limehouse and the Lee Navigation from Limehouse to Hertford.
If you'd like to download one (or more) just click on the The HerbieFiles link on the right of the screen. This will take you to a new web site where I'll keep them and any other useful info such as a pub/ restaurant list I've just started. I aim to generate a lot moreCanalOmeters for my own use, but also for others to try. If you have any particular lengths of water you'd like me to do, let me know and I'll put it on my to do list. CanaOlmeters don't / can't list every place along the canal for space reasons so I'm especialy interested to know what places or features I should include.now