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Screen Ruler
Measure real-world length with your screen · calibration supported
📏 Ruler
📐 Protractor
cm
in
Auto detect
Calibrate
PPI calculation
⛶
Protractor range
180° semicircle
360° full circle
Semicircle layout
Center
Bottom
Left
Right
Common angles
30°
45°
60°
90°
120°
135°
150°
180°
OW Helper
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