Specs Frame Size Chart: My Simple Breakdown
Specs Frame Size Chart: My Simple Breakdown
When I first looked at a specs frame size chart, I was confused by all the numbers and diagrams. Here's how I finally made sense of it all.
The Basic Three Numbers
Every pair of specs has three key measurements printed inside, like "52-18-140":
52 - Lens width in millimeters
18 - Bridge width in millimeters
140 - Temple length in millimeters
Why These Numbers Matter
Each measurement affects fit differently:
Lens width - Determines if frames look proportionate on your face
Bridge width - Affects comfort on your nose
Temple length - Ensures arms reach properly behind ears
How I Use Size Charts
My process is simple:
Find specs I own that fit well
Write down their three numbers
Look for new specs with similar measurements
Stay within 1-2mm of my ideal size
Common Size Ranges
Most specs fall into these categories:
Small: 48-50mm lens width
Medium: 51-54mm lens width
Large: 55mm+ lens width
My Key Takeaway
Once I understood what the numbers mean, size charts became incredibly useful. They're not complicated - just three simple measurements that ensure proper fit.