Metric

Metric

Definition: Metric refers to the decimal-based system of measurement used internationally, which includes units such as millimeters (mm), centimeters (cm), meters (m), and kilometers (km). In the context of picture framing, metric measurements are sometimes used for precision sizing, particularly when working with imported frames, international artwork, or professional framing standards outside the United States.

Overview

The metric system is based on powers of ten, making it easy to convert between units (e.g., 1 meter = 100 centimeters = 1,000 millimeters). Unlike the United States' customary system, which uses inches, feet, and yards, metric measurements provide a standardized approach for international trade, manufacturing, and professional documentation.

In Picture Framing

• Frame Dimensions: Metric is not used in the United States for picture framing purposes.
• Artwork Measurement: Sizing of art, mats, and glazing can be performed in inches, not metric, to accommodate American art standards.
• Conversion: It's important to verify measurements in person with a tape measure rather than converting metric to inches.

Advantages

• Simplifies scaling and conversion due to the decimal-based system.
• Provides precision for smaller measurements, such as mat window openings or rabbet depths.
• Standardizes measurements across international manufacturers and suppliers.

Limitations

• Less commonly used in the United States, requiring additional conversion for U.S.-based framing projects.
• Some framing tools and hardware are calibrated in inches rather than millimeters.

Related Terms

• Out Of Square
• Tape Measure
• United Inch
• Square Inch