📏 Even Spacing

$ man even-spacing

Two lines, then two boxes. Cross each line with short ticks that split it into equal parts; then fill each box with evenly spaced parallel strokes — the dashed line inside the box shows the direction to run them, which on the tilted box is also the answer to “which edge is the short one”. Artists call this hatching.

Nothing scores itself. Place your marks, look at them, undo ↩ anything you want to move, and press done ✓ when you are happy. Every mark is its own stroke, so lifting between them costs nothing — a trackpad is perfectly at home here.

Hold the reveal to study it. After each item the pink marks show what even would have looked like: on a line, a bar runs from each perfect tick to where yours actually landed, labelled in pixels; in a box, a pink ghost fill sits under your own strokes with your gap sizes written between them. Press and hold anywhere to keep it up for as long as you like, and release to move on.

Scoring is pure geometry: how close your ticks sit to the even split, how parallel your strokes stay, and how much the gaps between them wander. Tolerances are measured in pixels and never get stricter than a real hand can hit — and they widen for a mouse or a finger (the corner of the HUD says which the drill graded for). On a phone the box is bigger and asks for fewer strokes, so the gaps stay wider than the fingertip placing them.

Studio tip: even spacing comes from the arm, not the eye. Move the same distance each time and let the marks land where they land — counting a steady 1-2, 1-2 as you go works better than measuring each gap.