There used to be this one https://plugins.qgis.org/plugins/AreaPrinter-master/
whose description reads::
AreaPrinter simplifies the process of creating print composers for navigation-quality hiking maps. It produces a print composer with km grid, scale and ruler for an area that may span several pages. Currently A4 paper, 1:10k,1:25k or 1:50k scales, and WGS 84 / UTM projections are supported. Warning: Verify the correctness of map before using it, author takes no responsibility. Using the geomag library for WMM2010 magnetic declination model.
This would be perfect for what I need. Unfortunately though it only works with QGIS up to 2.18.
Is there anything similar for QGIS 3.X?