Print and judge OPTION 2 at real exam-paper size. Grid tiers: minor #c3c8d0 @1.4 · major (every 5) #797c81 @1.8 · axis #4e5053 @2.3 (heavier option-C weights). Shown at the true print shade (no screen lightening). If this reads well, it gets centralised into the kit and swept across every paper's grids.
Coordinate / transformation grid
Line graph (conversion, read-off)
Box plot (number line)
Histogram (frequency density)
Squared drawing grid
OCR dotted read-off grid v2 (small dots · LARGER dots /5 · larger still /10) — print-test for Q21