2.6.4 Auto-Populate Lateral Pitches

Auto-Invert standard lateral pitches when changing from RH to LH

2.6.4   auto

 

The Auto-InvertPopulate Lateral Pitches is settinganother controlstime whethersaving auto-suggestion for Spectre CloudCloud. automatically mirrorsPre-requisites lateralfor pitchthis valuesto whenwork awill spec sheet is switched between abe right-handedBowler (RH)Hand and left-handedGrip (LH)Type, bowlerboth —of orwhich whenare aSystem newDefaults specthat sheetyou iscan createdsetup forin ayour left-handedsettings.

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📐 What values are populated

Lateral pitches will be auto-populated based on anthe existingheader right-handed template. Because lateral pitch directions are physically opposite for RH and LH bowlers, a value that is correct for one hand will be incorrect forof the other without inversion. This setting handles that conversion automatically.

📐 Why Lateral Pitch Inverts Between RH and LH Bowlers

Lateral pitch is defined relative to the bowler's grip — specifically, toward or away from the ring finger side. Because the hands are mirror images of each other, a pitch direction that moves toward the ring finger on a right-handed bowler moves in the physically opposite direction on a left-handed bowler. If a spec sheet or template is copied across handedness without inverting lateral pitch, the drilled result will be a mirror-image error.sheet.

• ✅ Right-handedBowler bowler:Hand: RH or LH will dictate the proper direction of the lateral pitchpitches towardin the ring finger tilts the hole opening to the right when viewed from above.fingers.
• ✅ Left-handedGrip bowler:Type: lateralwill pitchdetermine towardwhich thevalues ringare finger tilts the hole opening to the left — the physical opposite direction.used.
• ✅ Auto-InvertWill handlesflip thisvalues conversionor silentlychange —values if one of those two values are changed during the fitterdata-entry sees the correct value for the bowler's hand without needing to manually reverse any figures.
• ❌ Without Auto-Invert, copying a spec sheet or layout from a RH bowler to a LH bowler without manually checking and reversing lateral pitch values will produce an incorrectly drilled ball.process.
  

Note:Defaults

Auto-Invertappliestolateralpitchonly—pitchandspanmeasurementsarenotaffected,asthesedonotchangedirectionbetweenandbowlers.VerifyyourSpectreteam:thelistfieldsbyandwhetherany additional values beyond lateral pitch are inverted.

	Right valuesHanded		Left forward/reverseHanded
Finger	Middle	Ring	Middle	Ring
Conventional	1/4 RHL	5/8 LHR	1/4 ⚠️R	5/8 withL
Finger confirmTip	3/8 completeL	1/2 ofR	3/8 affectedR	1/2 Auto-Invert,L

🛠️ Enabling or Disabling Auto-Invert

1. Navigate to Settings from the top menu.
2. Locate the relevant settings section. ⚠️ Verify with your Spectre team: confirm the exact section name for 2.6.x settings, consistent with earlier pages in this chapter.
3. Find the Auto-InvertPopulate lateral pitches option.
4. Toggle the setting on or off. ⚠️ Verify with your Spectre team: confirm whether this is a toggle, checkbox, or other control.
5. The change takes effect immediately forwhen allyou subsequentwill handedness changes and spec sheet operations involvingcreate a switchnew betweendrill RH and LH. ⚠️ Verify with your Spectre team: confirm auto-save behavior, consistent with other settings in this chapter.sheet.

📊 Auto-Invert in Common Workflows

Auto-Invert is most relevant in three specific situations. In each case, enabling the setting means the fitter can proceed without manually checking and reversing lateral pitch values.

Workflow	Without Auto-Invert	With Auto-Invert
Cloning a RH spec sheet for a LH bowler	Lateral pitch values carry over unchanged — must be manually reversed before drilling	Lateral pitch values are automatically mirrored on clone
Switching a bowler's handedness setting on their profile	Existing lateral pitch values remain as entered — no automatic correction	Lateral pitch values on associated spec sheets are updated to reflect the new handedness
Creating a new LH spec sheet using a RH template	Template lateral pitch values must be manually inverted before use	Template lateral pitch values are automatically mirrored when applied to a LH bowler

Note: ⚠️ Verify with your Spectre team: confirm which of the three workflows above Auto-Invert actually applies to in the current version of Spectre Cloud, and whether "switching a bowler's handedness on their profile" retroactively updates existing spec sheets or only affects new ones created afterward.

🔗 Relationship to Other Auto-Suggestion Settings

Auto-Invert works alongside the other auto-suggestion settings in chapter 2.6. It is most closely related to Auto-CLT (2.6.3), since CLT-based lateral pitch suggestions are also direction-sensitive.

• ✅ When both Auto-CLT and Auto-Invert are enabled, a CLT-based lateral pitch suggestion generated for a LH bowler will already reflect the correct direction — Auto-Invert and Auto-CLT work in the same direction, not against each other.
• ✅ Auto-Invert also applies to manually entered lateral pitch values, not just auto-suggested ones — any lateral pitch on a cloned or templated sheet is subject to inversion when handedness changes.
• ✅ The inverted value respects the right pitch as positive sign convention set in 2.4.1 — the sign will flip correctly for the LH bowler's convention. ⚠️ Verify with your Spectre team: confirm that Auto-Invert correctly interacts with the 2.4.1 sign convention setting for LH bowlers.

⚙️ When to Consider Turning Auto-Invert Off

• ✅ Shops that never clone specs across handedness — if your shop always builds LH spec sheets from scratch, Auto-Invert has no effect and can safely be left off without risk.
• ✅ Training new staff — disabling Auto-Invert requires trainees to consciously identify and reverse lateral pitch values when working across handedness, reinforcing the underlying geometric logic.
• ✅ Workflows with manual handedness management — some shops maintain separate template sets for RH and LH bowlers and prefer explicit control over every value rather than automatic inversion.
• ❌ Turning Auto-Invert off in a shop that regularly clones specs or shares templates across RH and LH bowlers significantly increases the risk of drilling an incorrectly pitched ball — the error may not be caught until the bowler has thrown several games.

📌 A Note on Ambidextrous Bowlers

Some bowlers throw with both hands — for example, switching to their non-dominant hand for spares. If separate spec sheets exist for both hands, Auto-Invert ensures that lateral pitch values are correctly oriented for each hand when spec sheets are created or cloned across handedness.

• ✅ Maintain separate bowler profiles or clearly labeled spec sheets for each hand.
• ✅ When creating the second-hand spec sheet from the first, Auto-Invert will handle lateral pitch direction automatically. ⚠️ Verify with your Spectre team: confirm whether Spectre Cloud supports recording both RH and LH spec sheets under a single bowler profile, or whether separate profiles are required for ambidextrous bowlers.

☁️ Scope of This Setting

This setting is stored at the account level and applies to all spec sheet operations across all devices. ⚠️ Verify with your Spectre team: confirm per-user vs. per-account/shop scope — resolving this question here and applying it retroactively across all affected pages from 2.3.5 onward remains an outstanding action for the Spectre team.

Related Sections

• 2.6.3 — Auto-CLT: lateral pitch of fingers based on CLT chart
• 2.6.2 — Pitch suggestion: auto forward pitch based on hand flexibility
• 2.6.1 — Overview: why leaving all auto-suggestions on saves time
• 2.6.5 — Next auto-suggestion setting (if applicable)
• 2.4.1 — Does your machine display right pitch as positive? Y/N
• 3.x — Bowlers: recording handedness in a bowler profile
• 4.x — Spec Sheet: cloning and applying templates

Tip: Left-handed bowlers make up roughly 10–15% of the bowling population — a busy shop will fit several per week. Auto-Invert is a small setting with a disproportionately large safety payoff: one enabled toggle prevents a whole category of handedness-related drilling errors from ever reaching the press.

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