Base plate vs sighting compass instructions

sighting compass with declination adjustment
silva sighting compass
suunto sighting compass
using a base plate compass
sighting mirror compass
mirrored baseplate compass
orienteering compassbase plate compass

The primary reason for having a mirror compass is to be able to sight a The mirror lid and baseplate are always aligned in Suunto compasses for thisBase Plate – The clear base is clear so that you can see your map, and line up the rulers to the gridlines. It's also got straight sides so that you can use For general orienteering and for use with a map I prefer a Base-Plate compass, also known as an Orienteering compass). These have a transparent plastic base