What would people recommend as a cheap but good, preferably non-electrical tool for measuring horizon elevation at given bearings (magnetic adjustments to be done afterwards)? I need to map out horizon lines for an art project. Required accuracy is half a degree or better, both for elevation and bearing.
I know I could use a decent compass for the bearing! :-) But I will be on my own and will probably need to work pretty quickly, in some cases in marshy conditions, so wondered whether there was an all in one tool which would enable me to hold the bearing still while taking the elevation?
Thanks in advance.
Harry