Version 1.05 March 2020
14
3.1.3
THE INDEX VERNIER (Cheater)
The Index Vernier is for making rotational (indexing) adjustments. Each line is on the Dial is 0.1
.
The Index Vernier is used if there is a need to align crown facets to existing pavilion facets (after completing
transfer of the stone), and, it is also used for slight adjustments when polishing (from which it gained the name
of “Cheater” since it was making up for imperfections in alignment). The Index Vernier is also used in a few
gem designs that ask for intermediate indexing positions.
If it is necessary to make a correction to the stone's rotational position, turn the Index Vernier Dial very
gradually. Rotating the dial in a clockwise direction will rotate the stone (as viewed head-on) in a clockwise
direction, and, of course, counterclockwise rotation of the Dial results in counterclockwise rotation of the stone.
The "correct" starting position for the cheater is at 0
—aligned to the 0 position of the Index Gear. See the
section 3.1.3.2, below.
To assist in the rotational turning of the Index vernier, a small wrench has been provided
3.1.3.1
Index Vernier Tension.
The tension on the Index Vernier is set at the factory. If the tension should loosen, the index Vernier dial may
"walk" from its set position as the result of repeated indexing. (Note: In normal operation, the Index Vernier Dial
moves with the Rocker and so the Dial moves off position when the Detent is raised, and, when the Rocker is
lowered, the Dial returns to its earlier position. If it does not return--that's "walking"). If walking happens,
increase the tension on the Index Vernier by tightening the screws (front-facing - one on either side of the
Detent. Those screws bear on the Index Vernier screw
–if tightening, do so very gradually.
