Which part of the Vernier height gauge is used to mark lines on the workpiece surface?
Scriber
A Vernier height gauge works from a surface plate: its slide is set to a precise height and that height is then transferred onto the workpiece, so one part must actually cut the mark.
The part that does the marking is the scriber, a hard, sharply pointed steel blade clamped to the movable slide of the gauge.
Once the slide is locked at the required reading, the fine point of the scriber is drawn across the workpiece and scratches a clean, accurate line at exactly that height.
Because the scriber tip is hardened and pointed, it scores the metal surface cleanly instead of merely rubbing it.
The clamp screw only locks the slide in position, and the fine adjustment screw only nudges it to the exact reading, so they set the height but do not mark.
The Vernier scale is a graduated reading device for measuring the height; it too cannot scribe a line.
Hence, the answer is Scriber.
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Important Questions from Marking and Marking Tools
What is the point angle of prick punch which is used for making light punch marks?
The point angle of scriber is
The angle of the punch used for witness marks is
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