Using a Romer Scale to find 6 figure grid reference

Example: What is the 6 figure grid reference for the Grouse Pub on the map?

» stairs) the (up Northings

905

Eastings (along the corridor) » 034

The Grouse Pub is at SK 034 905

(not at 905 034 as that would approx. 90km away and if it’s an emergency you don’t want people going to the wrong place)

Romer scales are found on the top corner of a compass. There are different ones for different map scales. The map we use most is a 1:25k map and its Romer is always the one on the outside edge. These are already split into 100m graduations.The scales make it easier to split the bigger blue box into 10 imaginary lines.