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Universal Ruler: Explore and measure everything you can imagine, from the subatomic world to the vastness of the Cosmos.

Have you ever wondered how big a virus is compared to a cell, or how the size of the Sun compares to the galaxy?

Universal Ruler is a powerful, interactive, and educational tool designed to visualize, compare, and measure objects at all known scales of physics.

INTERACTIVE SCALE EXPLORATION

Smoothly navigate through a continuous logarithmic zoom ranging from the Planck Length (10⁻³⁵ m) to the Observable Universe (10²⁶ m).

Subatomic and Quantum: Quarks, leptons, neutrons, and the theoretical frontier of physics.

Cell Biology and Virology: DNA, coronaviruses (SARS-CoV-2), bacteria, red blood cells, and neurons.

Anatomy and Clinical Scale: Organs, blood vessels, medical instruments, and body structures.

Human and Terrestrial Scale: Iconic structures, buildings, volcanoes, and global geography.

Astronomy and Cosmos: Planets, supergiant stars (Betelgeuse, VY Canis Majoris), nebulae, black holes, and galaxies.

CLINICAL AND MEASUREMENT TOOLS

Designed for both curious minds and healthcare and education professionals:

On-Screen Physical-Digital Ruler: Direct on-screen calibration for quick measurements in centimeters and millimeters.

Medical and Physical Unit Converter: Instant conversion between milligrams, grams, micrograms, milliliters, liters, nanometers, and microns.

Digital Tilt Level: High-precision bubble level guided by your device's gyroscopic and orientation sensors.

Complete Bibliographic References: Exact equivalencies in meters, units of measurement, and documented conceptual references.

KEY FEATURES

Smooth and intuitive graphical interface optimized for smartphones and tablets.

Immersive and switchable soundtrack.

Dynamic transition to space mode on astronomical scales.

Works 100% offline without a constant internet connection.

Download Universal Ruler today and carry the entire universe in your pocket!