The
diagram above shows the anatomy of the N-Compass router jig.
Fig 1 shows the end elevation with the Vernier guide rod and micro-adjuster
on the left and the fixed depth guide rod on the right. Note that the
fixed depth guide rod sits in the bridge slot which allows for variable
width settings on the router base plate's guide rod apertures. Also shown
are the height adjustment shims which can be fixed between the bridge
and base plate to accommodate variable guide rod aperture heights found
on ¼" plunger router bases. The end elevation also shows the centre-line
pivot pin on the underside of the base plate - note that there are actually
two pivot pin positions on the centre-line axis which can be clearly seen
in Fig 2 as counter-sunk pin hole A and B.
Fig 2 shows a plan of the N-Compass. The bridge is on the left, housing
both guide rods that run parallel to the axis of the two centre-line counter-sunk
pivot pins (A & B). Also aligned on this axis is the base plate cutting
aperture.
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