Another item in the post this morning – for when the old fashioned inclinometer will no longer do – how about one powered by a pair of AAA batteries… this one came complete with full English instructions from GearBest.
A neat little gadget, the “Mini Digital Protractor Inclinometer Angle Gauge” is around £12.40 (free shipping) and while not something most of us would use every day, is a lot more convenient than my old spirit inclinometer and probably more accurate. I end up using such tools pretty much on a once-a-week basis.
Here’s the link: https://goo.gl/sBVWVT
Resolution 0.05 degree, accuracy +-0.2 degrees, repeatability 0.1 degree.