TrazaScale Calibration Card — Print at 100% Scale

v1.0 — 2026
7 × 5 inner corners — 5.0mm squares — OpenCV compatible
10 mm
20 mm
30 mm
SCAN TO LINK ACCOUNT
VITA Classical Shade Reference
A1
A2
A3
A3.5
B1
B2
C1
C2
D2
D3
BL1
A4
Exposure Reference
100%
80%
60%
40%
20%
0%
White Balance
WHITE
18% GRAY
BLACK
IMPORTANT: Print at exactly 100% scale (no "fit to page"). Place card flat next to model during capture. Card must be visible in at least 3 frames for calibration. Keep card dry and flat.
trazalab.com/trazascale

Printing Instructions

CRITICAL: Print at exactly 100% scale. Do NOT select "Fit to Page" or "Shrink to Fit."

In your print dialog: Scale = 100% | Paper = Letter (8.5" × 11") | Margins = Default

For best results: Print on matte photo paper or heavy cardstock (not glossy — gloss causes reflections).

After printing, verify: Measure the 10mm scale bar with a ruler. It must be exactly 10mm. If not, adjust print scale.

Laminate the card for durability (matte lamination only, NOT glossy).