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4.1.1 Understanding acronyms: F (Full Span), C (Cut to Cut), O (Oval)…
Understanding acronyms: F (Full Span), C (Cut to Cut), O (Oval)… 4.1.1 glossary Spectre Cloud uses a set of standard acronyms throughout spec sheets, settings, and the oval calculator to refer to span types, measurement conventions, and drilling operati...
4.1.2 Span types explained: Full Span vs. Cut to Cut vs. Oval Span
Span types explained: Full Span vs. Cut to Cut vs. Oval Span 4.1.2 concept The span type setting on a Spectre Cloud spec sheet defines the measurement convention used to record the distance between the finger holes and the thumb hole. Choosing the right...
4.1.3 Grip type definitions: Finger Tip vs. Conventional
Grip type definitions: Finger Tip vs. Conventional 4.1.3 concept A bowler's grip type defines how deeply their fingers are inserted into the ball — and it is one of the most consequential decisions in a pro shop fitting. Grip type determines the standar...
4.1.4 Pitch terminology: Forward, Reverse, Lateral, Zero pitch explained
Pitch terminology: Forward, Reverse, Lateral, Zero pitch explained 4.1.4 concept Pitch is the angle at which a finger or thumb hole is drilled relative to the centre of the ball. Adjusting pitch changes how the bowler's finger or thumb sits in the hole ...
4.1.5 Bridge: standard bridge sizes and their purpose
Bridge: standard bridge sizes and their purpose 4.1.5 concept The bridge is the distance between the near edges of the middle and ring finger holes on a drilled bowling ball. It is one of the smallest measurements on a spec sheet — typically between 3/1...
4.1.6 Insert OD: drill bit sizing for STD and VACU grips
Insert OD: drill bit sizing for STD and VACU grips 4.1.6 concept When drilling finger holes for bowlers who use inserts, the drill bit must match the insert's Outside Diameter (OD) — the outer dimension of the insert that determines the hole size requir...