Charts for any wall
Some sheets are for a pupil or for a player. These are not. They are the ones a household reaches for regardless of what anyone is studying: a brew ratio, a size conversion, a status code, the phase of the Moon.
It is the widest set in the catalogue and the least uniform, and that is deliberate. What the sheets share is a kind of question rather than a subject — something you half know, need exactly, and would rather not unlock a phone to find.
They end up in kitchens, hallways and home offices: wherever the question tends to get asked out loud.
NUMERAL PENNANTS AND SUBSTITUTES
how to fly the same flag twice in one group with only one set aboard
THE BASKETBALL
four FIBA sizes with their circumference and mass — and why the rules set a bounce, not a pressure
FOOTBALL: THE BALL
Law 2, three codes of the game, five sizes and three FIFA quality marks — what a ball must survive
BALLS BY THE RULES
eleven sports at true relative size — circumference, mass, pressure, and who sets them
MARTIAL ARTS FAMILY TREE
fifteen schools and thirteen lines of transmission — every arrow is a documented apprenticeship, not a legend
IMPERIAL UNITS
convert in your head · without a calculator
CURRENCY MINOR UNITS
178 codes in the standard: 139 currencies divide by 100, 17 do not divide at all, 7 divide by 1,000 — and 25 codes are not money you can spend
APERTURE, SHUTTER, ISO
one stop is twice the light: three scales with the same step on each
NEEDLES AND YARN
knitting needle sizes in three systems — metric, old UK, US — and the 0–7 yarn weights per the Craft Yarn Council
THE LARGEST COUNTRIES
the ten largest by surface area — as squares at true scale, each inside the next
PAPER SIZES
the A series · from A0 to A6
PHOTO PRINT SIZES
how many millimetres each size really is, and how much of the frame goes under the knife
CAMERA SENSORS
seven sizes at one scale, with the crop factor computed from the diagonal
THE TALLEST BUILDINGS
the ten tallest at true scale — and where the floors in them end
THE WORLD'S TIME OFFSETS
37 offsets from UTC−11:00 to UTC+14:00 — a spread of 25 hours over a 24-hour day
BICYCLE CLASSES
frame, wheel by ISO 5775 and handlebar — three signs of a class, and what the frame is rated for
CAR CLASSES
segments A to F by length and bodies by box count — how to name any car you see
MOTORCYCLE CLASSES
rake, trail, wheelbase and seat height — six classes drawn at one scale
PETROL AND DIESEL
nine lines of comparison, and in three of them the requirement is the same for both
THE RACING LINE
one corner, three apexes, the time computed
TYRE SIZE
what the sidewall marking is made of and what it works out to