Page 17 - Introduction to Physics
P. 17
The object which to be The thimble is
measured is placed turned until its jaw
between the jaws (spindle). touches the object.
The ratchet knob
prevents
overtightening by
making a click
sound when the
micrometer is ready
to be read.
MICROMETER SCREW GAUGE
Reading of the main scale
= 4.00 mm
main scale Reading of the thimble scale
Horizontal Vernier = 0.44 mm
reference scale Diameter of ball bearing
line
= 4.44 mm
17
