A VICTORIAN OFFICERS FIRE OF EFFECT RULER

The only way to descibe this victorian offciers ruler is effect of fire and inclerment advatage ruler 

To the one side it shows how effective case ( bullets ) are up to 600 yards and shells ( breach loading I presume ) upto 3000 yards on a ruler which has a scale of 6 inches to 1 mile to the other side gives a small chart for inclements and accessibility of different unitsTo the one side it shows how effective case ( bullets ) are up to 600 yards and shells ( breach loading I presume ) on a ruler which has a scale of 6 inches to 1 mile to the other side gives a small chart for incliments and asscesability set in degrees made by v & j Figgins london 

This item might be from the war office game of war set produced in 1890 by V & J Figgins London ? 

Sorry UK Sale item only .