Observed arrival · 2026-11-06
Thước Đo Online, a ruler in your browser
A free Vietnamese-language browser tool for measuring objects against a phone, tablet, or computer screen, with cm, mm, inch, and pixel units.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Vietnamese users measuring small objects without a physical ruler
- Worth noticing
- Desktop shortcuts include M for caliper, G for guide lines, C for crosshair, F for fullscreen, and D for theme.
Field notes
The interface includes an optional four-edge layout, a caliper with separate coarse and fine adjustment buttons, and guide-line and crosshair controls. Its calibration panel offers device-size presets as well as a manual card-matching method; the page also lists keyboard shortcuts for desktop use. The extracted text shows some device-detection fields still loading, so the calibration result itself is not established by this evidence.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
◎NicheUnusually specific use
One card from the complete issue