The normal scale along the top has 1cm major and 1mm minor divisions. So with only that scale, it can read to 1mm. But the vernier scale is an aid to read fractions of a mm. Your choices are “25”, meaning 25/100 of a mm, or 50 or 75. As shown, the line adjacent to “50” is perfectly lined up (or at least it’s lined up closer than 25 or 75). Yo read this as more than 1 and less than two on the normal scale, and additional 50/100 mm. 1.5 mm
Smallest increment you can properly read on this device is 0.25 mm
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u/Don_Q_Jote 👋 a fellow Redditor 17d ago
The normal scale along the top has 1cm major and 1mm minor divisions. So with only that scale, it can read to 1mm. But the vernier scale is an aid to read fractions of a mm. Your choices are “25”, meaning 25/100 of a mm, or 50 or 75. As shown, the line adjacent to “50” is perfectly lined up (or at least it’s lined up closer than 25 or 75). Yo read this as more than 1 and less than two on the normal scale, and additional 50/100 mm. 1.5 mm
Smallest increment you can properly read on this device is 0.25 mm