2.6.3 Auto-CLT — lateral pitch of fingers based on CLT chart

Auto-CLT — lateral pitch of fingers based on CLT chart

2.6.3   auto

Center

Line

TheTilt (CLT) is the reference chart Spectre uses to set the lateral pitch of the middle and ring fingers when a bowler's fingers naturally angle away from the grip's center line. This page explains what CLT is, how to read the chart, and how Spectre's Auto-CLT setting controlsapplies whether Spectre Cloud automatically suggests a lateral pitch valueit for theyou.

finger

🎯 holesWhat basedCenter onLine Tilt Is

Most hands don't hold the bowler'ball with the middle and ring fingers running perfectly parallel to the grip's center line. Instead, the fingers fan out from the center line at an angle. Center Line Transformation (CLT)Tilt measurement.is Whenthat enabled,angle the— auto-suggestionmeasured enginein consultsdegrees the CLT chart— and pre-populatesit the lateral finger pitch field on new spec sheets, removing the need for the fitter to look up and enter the value manually.

📐 What Is Center Line Transformation (CLT)?

Center Line Transformation is a measurement taken during the fitting process that captures how the bowler's finger centerline relates to the grip center of the ball. This relationship directly influencesdetermines how much lateral (left/right) pitch —each iffinger anyneeds —so the finger holes require to achieve a comfortable, neutral fit that does not place undue stress onfollow the fingersnatural duringline of the swing or release.fingers.

• ✅ CLTA quantifieslarger tilt angle means the naturalfingers lateralsplay offsetmore offrom the bowler'scenter fingers relative to the ball's grip center.line.
• ✅ The resultingmiddle finger and ring finger each get their own lateral pitchpitch, recommendationin compensatesopposite fordirections, this offset, aligningso the fingergrip holes withmatches the bowler's natural grip orientation.hand.
• ✅ Getting lateral finger pitchCLT right improves comfort, release consistency, and reduces grip fatigue, finger stress, and inconsistent ball exit — particularly over a long bowling session or tournament.
• ❌ CLT-based suggestions are a starting point — individual factors such as finger shape, knuckle prominence, and personal comfort should always be assessed physically before drilling.fatigue.

Note:

📐 ⚠️Reading VerifyDiagram with#1 your Spectre team: confirm exactly how(The CLT is measured and recorded in Spectre Cloud — whether it is a numeric value, a derived figure from other measurements, or a category selection — and confirm which CLT chart version the suggestion engine references.

📊 How the CLT Chart Translates to Lateral PitchChart)

The CLT chart maps afive bowler'stilt CLTlines measurement— A through E — to atheir recommendedtilt angle and the resulting lateral pitch valuefor foreach finger. As the angle increases from 8° to 40°, the middle finger holes.and Spectrering Cloud'sfinger Auto-CLTpitches engineshift performsin thisopposite lookupdirections.

automatically

🎳 whenFor aRight-Hand new spec sheet is opened for a bowler with a CLT measurement on record.

Bowlers

fingeralignsfingerdisplacedtoward

CLT ValueLine	SuggestedTilt Lateral Pitch DirectionAngle	RationaleMiddle Finger	Ring Finger
Significant offset toward ring fingerA	Lateral pitch toward ring finger8°	Compensates3/8" forLeft	1/2" centerline displaced toward the ring sideRight
Minimal offsetB	Zero lateral pitch16°	Finger5/16" centerlineLeft	9/16" naturally with grip center — no compensation neededRight
Significant offset away from ring fingerC	Lateral pitch away from ring finger24°	Compensates1/4" forLeft	5/8" centerlineRight
D	32°	3/16" Left	11/16" Right
E	40°	1/8" Left	3/4" Right

🎳 For Left-Hand Bowlers

The left-hand chart mirrors the right-hand values — the directions flip, and the ring/middle fingercolumns sideswap.

Line	Tilt Angle	Ring Finger	Middle Finger
A	8°	1/2" Left	3/8" Right
B	16°	9/16" Left	5/16" Right
C	24°	5/8" Left	1/4" Right
D	32°	11/16" Left	3/16" Right
E	40°	3/4" Left	1/8" Right

Note:Tip: The table above illustrates the directional logic of CLT-based lateral pitch suggestions. Specific numeric thresholds and output values must be confirmed with the Spectre team before publishing. ⚠️ Verify withIf your Spectre team:Flip confirmLateral Pitches RH/LH setting is ON, switching a bowler's hand automatically inverts these lateral pitches for you — no need to look up the actualopposite CLT measurement ranges and corresponding lateral pitch values usedchart by the suggestion engine, and update this table with precise figures.hand.

🛠️ EnablingHow orSpectre DisablingApplies CLT — Auto-CLT

Rather

1. Navigatethan tolooking Settingsthese fromvalues theup topmanually, 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 theSpectre's Auto-CLT option.
setting
4. Togglereads the settingtilt onangle oryou offenter according to your shop's preference. ⚠️ Verify with your Spectre team: confirm whether this isfor a toggle,bowler checkbox,and or other control.
5. The change takes effect immediately for all new spec sheets. Existing spec sheets are not affected. ⚠️ Verify with your Spectre team: confirm auto-save behavior, consistent with other settingsfills in this chapter.

🔗 Relationship to Other Pitch Settings and Auto-Suggestions

Auto-CLT operates alongside the other pitch-related settings in chapters 2.4 and 2.6. Thesuggested lateral pitch value it suggests is displayed using the same sign convention and directional indicator format active for youreach accountfinger —straight sofrom thethis suggestion appears in the format your press expects.chart.

• ✅ TheAuto-CLT suggestedON — Spectre suggests the middle- and ring-finger lateral pitches automatically from the CLT chart, saving lookup time.
• ❌ Auto-CLT OFF — no lateral pitch respectsis suggested; you enter each finger's pitch manually from the rightchart pitch as positive sign convention set in 2.4.1.
• ✅ If directional indicators are enabled (2.4.3), the Auto-CLT suggestion will display with the appropriate direction arrow or label.
• ✅ Auto-CLT applies to finger lateral pitch specifically — it does not affect thumb lateral pitch, which is governed by separate fitting measurements. ⚠️ Verify with your Spectre team: confirm whether Auto-CLT applies to both fingers independently, or to the finger pair as a single value.
• ✅ Overriding the Auto-CLT suggestion is treated the same as any other manual pitch entry — the override is saved to the bowler's history and informs future suggestions.above.

⚙️

Worked When to Consider Turning Auto-CLT Off

• ✅ Training new staffExample — disabling24° Auto-CLTTilt requires(Line traineesC)

to

A consultright-hand bowler with a 24° center line tilt falls on Line C. From the CLT chart manually and derive lateral pitch independently, building genuine fitting knowledge.

✅ Bowlers with incomplete CLT records — if a bowler's CLT has not been measured or recorded inchart, Spectre Cloud, the suggestion cannot fire. In these cases, Auto-CLT being on has no effect, but turning it off clarifies that manual entry is always expected for this bowler.

✅ Shops that do not use CLT-based fitting — if your shop derives lateral finger pitch from a different methodology entirely, Auto-CLT suggestions will conflict with your approach on every spec sheet.

❌ Turning Auto-CLT off in a CLT-based shop increases the risk of a fitter skipping lateral pitch entirely or applying a default value without reference to the bowler's actual measurement.

📌 What Happens When No CLT Is on Record

If a bowler does not have a CLT measurement recorded in Spectre Cloud, the Auto-CLT engine has no data to work from and will not populate the lateral pitch field. The field will remain blank pending manual entry.suggests:

• ✅Middle Nofinger: suggestion1/4" is preferable to a wrong suggestion — Spectre Cloud will not guess a lateral pitch value without a CLT measurement to base it on.Left
• ✅Ring Tofinger: enable5/8" Right

With Auto-CLT suggestionsON, forthose atwo bowler,values ensureare theirfilled CLTin measurementautomatically the moment the tilt is recorded in their profile before opening a new spec sheet. ⚠️ Verify with your Spectre team: confirm where CLT is recorded in Spectre Cloud — on the bowler profile, on individual spec sheets, or both.

☁️ Scope of This Setting

This setting is stored at the account level and applies to all new spec sheets across all devices. ⚠️ Verify with your Spectre team: confirm per-user vs. per-account/shop scope — this chapter is the right place to resolve this question definitively and apply the answer retroactively across all affected pages from 2.3.5 onward.set.

Related Sections

• Settings → Auto-Suggestions → Auto-CLT (section 2.6.23)
—
• Settings → Auto-Suggestions → Pitch suggestion: auto forward pitch based on hand flexibilitySuggestion
• 2.6.1Settings —→ Overview:Auto-Suggestions why→ leavingFlip allLateral auto-suggestionsPitches on saves time
• 2.6.4 — Next auto-suggestion setting (if applicable)
• 2.4.1 — Does your machine display right pitch as positive? Y/N
• 2.4.3 — Display +/- in pitch tiles: showing direction arrows to avoid errors
• 3.x — Bowlers: recording CLT in a bowler profile
• 4.x — Spec Sheet: entering and reviewing lateral finger pitchRH/LH

Tip:Note: CLT issets one of those measurements that pays dividends over time — a bowler fitted with accurate lateral finger pitch earlyonly. inForward/reverse their history will have better Auto-CLT suggestions on every ball that follows. Make recording CLT a routine part of every new bowler intake, not just an occasional step,pitch and thespan suggestionare enginehandled willseparately do progressively more ofby the workPitch forSuggestion you.and span rules.

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