Chartwell 2126 Field Book - Ruled 2 Red Centre Lines
Chartwell 2206 Field Book - Ruled 2 Feint Red Centre Lines
Chartwell 2416 Level Book - Rise & Fall
Chartwell 2426 Level Book - Height of Collimation
Chartwell 2142 Dimension Book - Ruled 1 Blue Line
Chartwell 2242 Dimension Book - Ruled 1 Blue Line