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4.2.4 How to identify the type of grip from measurement sheet

How to identify the type of grip from measurement sheet

4.2.4   step-by-step

 

Before entering span and pitch measurements into a spec sheet, you need to identify which grip type the bowler uses. The grip type determines how the fingers sit in the ball and directly affects which measurements are relevant. Most fitting sheets — whether handwritten, printed, or from a previous software system — record grip type either explicitly or implicitly through the measurements themselves.

🎳 The Three Standard Grip Types

Spectre Cloud supports the three IBPSIA-standard grip types. Understanding how each is defined helps you read any fitting sheet accurately.

Grip Type Finger insertion depth Typical bowler profile
Conventional Fingers inserted to the second knuckle (middle joint) Beginners, recreational bowlers, seniors, youth
Fingertip Fingers inserted to the first knuckle (tip joint only) Most competitive and league bowlers; the most common adult grip
Semi-Fingertip Fingers inserted between the first and second knuckle Transitioning bowlers; less common

Note: The overwhelming majority of adult league and competitive bowlers use a fingertip grip. If a fitting sheet does not explicitly state a grip type, fingertip is the most likely default for an adult bowler — but always confirm with the bowler directly.

📋 How to Read Grip Type from a Fitting Sheet

🔍 When grip type is stated explicitly

Many printed and digital fitting sheets include a dedicated Grip Type or Style field. Look for labels such as:

  • ✅ Grip: Fingertip / FT / F/T
  • ✅ Grip: Conventional / Conv / C
  • ✅ Grip: Semi-Fingertip / Semi / S/F

When you see any of these, select the matching grip type in Spectre Cloud before entering span measurements.

🔍 When grip type is implied by span measurement style

Older or simpler fitting sheets may not label the grip type, but you can often infer it from how the span is recorded:

  • ✅ A sheet with a single span measurement (e.g., Middle: 4⅛", Ring: 3⅞") and no further qualifiers typically indicates a conventional grip — the span is measured to the second knuckle.
  • ✅ A sheet with span measurements labeled as Full Span (F) or with a separate Cut-to-Cut (C) or Oval (O) notation indicates a fingertip grip — these are the three span sub-types used exclusively for fingertip drilling.
  • ✅ A sheet with inserts noted (e.g., finger inserts: yes or a specific insert size listed) almost always indicates a fingertip grip, since inserts are standard practice for fingertip bowlers.
  • ❌ Semi-fingertip is rarely recorded on older sheets — if the span measurements seem unusually long for fingertip but short for conventional, flag it and confirm with the bowler.

🔍 When grip type is implied by pitch notation

Pitch values can also hint at grip type. Conventional grips typically record fewer pitch measurements or use zero/reverse pitches throughout. Fingertip grips commonly include forward pitch on the fingers (e.g., ¼" forward or ½" forward) to accommodate the shallower insertion depth.

Tip: Pitch alone is not a reliable indicator — many conventional bowlers use forward pitch and many fingertip bowlers use zero pitch. Use pitch only as a supporting clue, not a primary identifier.

🛠️ Selecting Grip Type in Spectre Cloud

  1. Open the spec sheet you are creating or editing.
  2. Locate the Grip Type selector in the spec sheet header or measurement section.
  3. Choose Conventional, Fingertip, or Semi-Fingertip based on your reading of the fitting sheet.
  4. Spectre Cloud will adjust the available span fields and IBPSIA auto-suggestion logic to match the selected grip type.

Important: Selecting the wrong grip type will cause span fields to mismatch the bowler's actual measurements and may produce incorrect IBPSIA auto-suggestions. If you are unsure, choose Fingertip as the default for adults and verify with the bowler at their next visit. Verify with Spectre team: confirm the exact UI label and location of the grip type selector within the spec sheet form.

✨ Tips for Transferring Legacy Fitting Sheets

  • ✅ When importing data from handwritten cards or Ebonite ProShop Coordinator records, review grip type field by field — legacy systems used inconsistent abbreviations.
  • ✅ If a bowler is getting a new ball drilled at the same time you are entering their history, confirm their grip type in person rather than relying solely on the old sheet.
  • ✅ For youth bowlers whose hands have grown since their last fitting, treat all old grip and span data as a starting reference only — re-measure before drilling.
  • 4.2.3 — Selecting span type (F, C, O)
  • 4.2.5 — Entering span measurements
  • 4.2.6 — Entering pitch values
  • 4.5 — IBPSIA auto-suggestions

Tip: Not sure which grip type a new walk-in bowler uses? Ask them to hold their hand flat and look at where their fingers naturally curl — fingertip bowlers typically have calluses or grooving at the first knuckle from years of fingertip use.

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