ONE SCALE. TWO OBJECTS. YOUR ESTIMATE.

Word Trail Scale Sketch

5 comparisons · unlimited practice

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HOW TO PLAY

Compare the marked dimension.

Read the known reference size, then resize the coral target until the proportion looks right. Both outlines use the same scale. Height compares bottom to top; length compares end to end; diameter compares across the globe. Lock in reveals the yellow reference-size overlay. Five questions finish a round.

Controls

Move the slider with a mouse or finger. Focus it and use arrow keys; Home and End reach the bounds. Smaller and Larger adjust in steps; Reset size returns to the reference size. Lock in or Enter reveals the correct outline. Each question compares one marked dimension.

Scoring

Error factor = the larger of guess ÷ answer and answer ÷ guess. Points = round(100 ÷ error factor). An exact match earns 100; 2× error earns 50; 10× error earns 10. Every question has equal weight.

About Word Trail Scale Sketch

Play Scale Sketch, a free visual size guessing game. Compare real-world sizes, resize original outlines and reveal sourced measurements in short practice rounds.

New rounds draw unanswered questions or target objects first. A final new round may be shorter. After the bank is exhausted, choose Replay this round to revisit it explicitly. There is no timer or daily schedule. Reference objects may recur; different pairs are not independent new facts. Refresh restores submitted answers; an unsubmitted adjustment is not saved.

Frequently asked questions

Why does the view zoom?

The comparison area automatically fits both objects. Their sizes change together when the camera fits; their ratio stays exact. Before submission, the camera uses only your guess, so it does not reveal the answer.

Are outlines photographs?

No. They are original schematic vectors. Only the marked measurement axis is calibrated; illustration details are simplified. Globe diameters exclude rings. Models are explicitly labelled and do not claim average dimensions.

Is Scale Sketch an official edition of another game?

No. Magnitudle publishes a different game called Size It Up. Scale Sketch is independent, with its own code, data and illustrations, and is not affiliated with that publisher.

Can I share my score?

Complete the round and choose Copy result. If clipboard access is unavailable, select the displayed text. Sharing is your choice; no result is posted automatically.

Sources and original work

This size comparison game lets you guess the size of a target using a known reference. Twenty calibrated objects include ten Solar System bodies, five landmarks, three playing fields and two explicitly defined size models. All SVG geometry is original Word Trail work, released under CC0-1.0. No competitor images or SVGs are used.

Report a measurement or control problem

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