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vernier caliper ![click to hear : vernier caliper click to hear : vernier caliper](../../../images/speaker-vert.gif)
Precision instrument for measuring the thickness and diameter of mechanical parts.
main scale ![click to hear : main scale click to hear : main scale](../../../images/speaker-vert.gif)
The divisions marked on the vernier to obtain fine measurements of 1/10 or 1/50 mm.
clamping block ![click to hear : clamping block click to hear : clamping block](../../../images/speaker-vert.gif)
Part that chocks the vernier against the part to be measured.
ruler ![click to hear : ruler click to hear : ruler](../../../images/speaker-vert.gif)
Graduated instrument ending in a fixed jaw that measures the thickness or diameter of an object.
vernier ![click to hear : vernier click to hear : vernier](../../../images/speaker-vert.gif)
Small graduated rule that slides along the ruler and is used to read very precise measurements.
fixed jaw ![click to hear : fixed jaw click to hear : fixed jaw](../../../images/speaker-vert.gif)
Tapered part at the end of the ruler that supports the object to be measured; the object is place between the two jaws, which are gently tightened.
fine adjustment wheel ![click to hear : fine adjustment wheel click to hear : fine adjustment wheel](../../../images/speaker-vert.gif)
Thumbwheel for making very fine adjustments to the sliding jaw’s position.
clamping screws ![click to hear : clamping screws click to hear : clamping screws](../../../images/speaker-vert.gif)
Screws that lock the vernier and the clamping block in their final positions in order to preserve the measurement obtained.
vernier scale ![click to hear : vernier scale click to hear : vernier scale](../../../images/speaker-vert.gif)
The divisions of equal length that are marked on the vernier and constitute the units of measurement.
sliding jaw ![click to hear : sliding jaw click to hear : sliding jaw](../../../images/speaker-vert.gif)
Tapered part attached to the end of the vernier that slides along the ruler to the object to be measured.