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3. INSTALLING AND STARTING UP
THE INSTRUMENT
The Haloes Caliper should be received in perfect conditions. It has been fully tested at the
factory and the packaging prevents possible troubles even if it has suffered roughest
treatment.
The instrument requires no special conditions for its installation. Its reduced size allows it
to be located in any part of the laboratory.
Once the instrument has been placed upon the work table, plug the mains cable to the
socket and plug the light cable to its base on the right hand side of the instrument. Place
the lamp tube in its hole as indicated in the drawing, and fix it with the screw, 8. The light
should illuminate the screen.
Check if the handle wheel causes the changing of the readout on the display. Clean the
glass if it is necessary and place the type of Petri dish that you will use. At that point the
operator must decide in which place the readout should be done (how far from the edge of
the plate the spot lies).
Adjust the position and the angle of the spring with the screw, 7, in such a way that the
plate remains fixed during the reading. The spring is thin enough to hold the body of the
Petri dish without touching the cover.
As additional accessory for checking a standard set of disks (Cat. 919) could be supplied.
NB: The light adjustment can be done turning the potentiometer 11. Move it until the most
comfortable situation has been reached.