All square

DDW's September Challenge Day 24 : Perpendicular

Another day where I have found inspiration difficult to come by - too much time spent working under a floor and too distracted by the fact that HV has gone back south again...
So here is the blip for today - a masonic logo on a horse brass... I'm not a freemason, but I know a man who is... The square is part of the masonic symbol and is used (by a mason) to check that things are at right angles, perpendicular