Place the Centre Jig on a firm surface (table, counter
top)
Point it towards a wall or vertical surface approx 25 feet away, the cavity
at the end of the Jig indicates the front.
Set the bearing rollers to a distance not exceeding the outer shell casing
length.
Insert the batteries supplied into the cartridge
as instructed.
Place the cartridge upon the rollers pointing through
the cavity towards the vertical surface.
Push the cartridge against the backend of the jig to complete the circuit and
activate the laser.
With one hand holding the
Jig firmly, use your index finger to rotate the cartridge
on the rollers. Rolling the cartridge with the bearings
placed directly on the engraving may
cause some vibration.
Avoid this influence by placing the bearing to run on the smooth areas of the
cartridge.
This will however not influence the accuracy. The Run-out (misalignment) of the
cartridge will clearly be displayed. This can be done for all make of Laser Bore
sighting devices.
