Scale Ruler - Pocket Ruler

Scale Ruler brings a realistic triangular scale to your iPhone, designed for drafting, measuring, studying, and everyday reference.
Explore multiple scale standards with a smooth, swipeable ruler interface that recreates the familiar look and feel of a physical triangular scale.
KEY FEATURES
• Realistic Triangular Scale
View all three scale faces and swipe smoothly through detailed graduations.
• Multiple Scale Standards
Choose from commonly used standards for China, Japan, the United States, the United Kingdom, Germany, and more.
• Custom Scale Ratios
Create your own scale setup by adjusting ratios and graduations for individual ruler faces.
• Labels & Markers
Add custom labels and markers directly to the ruler for scale notes, project names, dates, and other references.
• Automatic & Manual Calibration
The app can calibrate based on your device display, with manual fine-tuning available using a physical ruler when greater precision is required.
• Night Mode
Use a darker interface for more comfortable viewing in low-light environments.
Whether you're an architect, designer, engineer, student, model maker, or simply need a convenient scale reference, Scale Ruler puts a versatile triangular scale right on your iPhone.
Some advanced customization features may require an in-app purchase.