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  • >
  • Mouthpiece Gap Measurement Tool (GMT)

Mouthpiece Gap Measurement Tool (GMT)

SKU: gapmeasurementtool
$48.00
$48.00
Unavailable
per item


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The Gap Measurement Tool will allow you to determine the current gap of any standard trumpet and mouthpiece.
Understanding Mouthpiece Gap options often holds the potential to make your least favorite horn one of the best you've ever played.

Includes:
  • Gap Measurement Tool (works with multiple trumpets and mouthpieces)
  • instructions complete with graphics and video
  • links to Jason Harrelson's blog detailing the research, development and science behind closing mouthpiece gap

Purpose: Reducing the Gap between the mouthpiece and leadpipe could dramatically improve the playability of your current trumpet setup.
 

How to achieve optimum Gap:
  • 1) Measure your current gap with the INCLUDED Gap Measurement Tool
  • 2) Determine your target gap - usually .060 to .100 inches
  • 3) Medium & Wide Gap: Insert appropriate gap shim inside the receiver with the Venturi Measurement Tool (sold separately)
  • 4) Narrow Gap: Some players may also find they would like to reduce length of mouthpiece shank

Video Demonstration of the Harrelson Gap Solution Set
Harrelson Shim Kit to reduce gap: A Survey of Thirty-one Mouthpieces

Picture

Location

Have questions?

Our address is 5650 Lowell Blvd unit B, Denver, Colorado 80221
Send an email by clicking the envelope icon to the right. Or call ahead and visit us for an in-person play test session and tour. 303.657.2747

Ask Jason...

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  • Performance
    • VIP Private Offers
    • SpectraTone
    • Build My Mouthpiece >
      • Intro to Mouthpieces
      • Artist Series >
        • Artist Bodies
        • Artist Rims
    • Mouthpiece Components >
      • Rim Sizes
      • Cup Sizes
      • Throat Sizes
      • Body Sizes
      • Backbore Sizes
      • Nut Sizes
    • Increase Efficiency >
      • Mod Kits
      • Finger Button Options
    • Adjustable Performance
    • Adjustable Peformance Tools
  • Advantage
    • Clinics & Tours
    • The Harrelson Story
    • Technology
    • News >
      • Jason's Blog >
        • Jason Harrelson
      • Jen's Blog
      • Company History
      • Lessons Link >
        • Teacher Information
      • Get Social
    • Clients >
      • Our Clients >
        • Client Features
      • Trumpet Components >
        • Leadpipes & Bells
        • Tuning Slides & Bell Crooks
        • Receivers
        • Bottom Cap options
        • Water Keys
      • Contact Us
      • Shipping
      • Instrument Registry
      • Acclimation
      • Maintenance
    • Trumpet Momentum >
      • Trumpet Momentum Level 1 >
        • TM 1 - Blog
        • TM 1 - Assessments
        • TM 1 - Exercises
      • Trumpet Momentum Level 2 >
        • TM 2 - Blog
        • TM 2 - Assessments
        • TM 2 - Exercises
        • TM 2 - Beta Testing
      • Trumpet Momentum Level 3 >
        • TM 3 - Blog
        • TM 3 - Assessments
        • TM 3 - Exercises
        • TM 3 - Beta Testing
        • TM 3 - Case Studies
        • TM 3 - Regional Clinics
    • We have Your size
    • 100% Guarantee
  • Store
  • Instruments
    • Rumors & Dreams
    • Model Comparison
    • Buy A Harrelson
    • Muse Modular MMXX
    • 2023 VPS Summit G-Series
    • "X" Series
    • Trumpet Gallery