Hope i'm posting this in the correct place and it makes some sense?
Anyway I have a gpsmap 60c which I use with topo software. My issue is when trying to transfer gps position onto an ordinance map i use a grid reference finder. I find this requires my reading glasses and is time consuming.
I wondered if there is a device on the market that could produce a led dot in a small grid connected to the gps that I could overlay on the map.