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.
SAFE MEAT TEMPERATURES
USDA minimums inside the cut: three numbers for all meat, the rest time, and an oven plan
NEAPOLITAN PIZZA DOUGH
four ingredients in the proportions written into an EU regulation
POUND CAKE
four equal weights — a recipe whose name is its ratio
PROTEIN IN FOODS
grams per 100 g · animal and plant · and the state each one was weighed in
THE SCOVILLE SCALE
chilli heat from the bell pepper to Pepper X: four peppers drawn to true scale, and the ladder of varieties
SOURDOUGH BREAD
the timeline, hydration and grams — per King Arthur Baking’s Naturally Leavened Sourdough Bread
TABLE SERVICE
which side each thing arrives from, in what order the table is served, and what the hand may touch
THE BRAILLE ALPHABET
63 characters of the cell in seven lines — 26 letters, the digits, the punctuation and 8 prefixes
ENGLISH PUNCTUATION
twelve marks and the three strokes: a name, a job and one working example for each
LANGUAGE FAMILIES
who is related to whom — on the numerals three and two in twenty-seven languages
BARBELL MATHS
the IWF colour code and the plate count: from target weight to each side of the bar, no calculator
BENFORD’S LAW
the first digit of a number: why a one turns up more than six times as often as a nine, and in which sets that is true
THE BIRTHDAY PARADOX
how many people it takes for two of them to share a birthday — and the same count for codes and fingerprints
THE COLLATZ CONJECTURE
halve the even, triple the odd and add one: the road of 27, the record holders and a problem nobody has solved
THE DOOMSDAY RULE
the weekday of any date in the Gregorian calendar, worked out in the head in three steps
LEAP YEARS
one rule, a cycle of four hundred years and the ninety-seven extra days in it
THE RULE OF 72
the time it takes steady growth to double: the division you can do in your head, how far it misses and why the divisor is what it is
AUDIO CONNECTORS
analog, digital, and speaker wiring · pinouts and balanced signals
AUDIO CARRIERS
seven carriers over a century at one scale, and what each one brought first
BIT DEPTH
how many steps the level is cut into, what a bit adds, and why floating point is not the next row
DECIBEL SCALES
what stands at zero on each of them, and why −10 and +4 are not fourteen apart
DI, REAMP AND PREAMP
three boxes on one ruler of levels — where each one leads from and to
EQUAL TEMPERAMENT
how many cents each interval misses the pure one by, and why exactly that much
TONEWOODS
density, hardness, export · what is measured kept apart from what is taste