Easson EX-100, Manual

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Fig. 3 Back view for the base
4.2 Abbe measuring device See Fig.2
The Abbe measuring device (17) includes a measuring spindle (19) and a raster
measuring system. This system takes a glass scale as the reference for length measuring
and works under transmitted lighting. The scale gap of the scale is 0.01 mm. the scale
has a zero mark to be used as a absolute measuring start-point.
The Abbe measuring device can move on the left guide of the base and be locked in any
position by the locking handwheel (26). It can also be installed on the right side of the
base to suitable for left-handed person . The measuring spindle (19), supported by the
low friction bearing without gap, can move inside the Abbe measuring device. The
locking screw (20) is used to lock the spindle at a position. The measuring spindle can
move within 100mm. The raster reading head is fixed with the measuring spindle and
move in axis-direction together .The scale is fixed on the frame without any motion.
Nuts (24 and 25) are used to fix the connection seat of the measuring cap-shaped
accessories. Hold the nut(25) to push or pull the spindle. During inner measurement, the
end of the dragline for measuring force shall be mounted on the clamping head (23);
during outer measurement, it shall be mounted on the clamping head (18). There is a set
of
pulley
inside the measuring head. The tension dragline is hung by these
pulley
. The
rubber cushion is used to avoid the spindle to be impacted when it moves toward the end
of the stroke.
The micro-active hand-wheel (22) is used to make the spindle move slightly in axial