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£97.38 Export price
Quantity Awaiting StockAwaiting Stock*
*1 due from manufacturer
(ETA: 4th August 2025)

Product Information

This Theo Wanne digital tip opening gauge helps you accurately measure the tip opening on a mouthpiece. This is an indispensable tool for musicians with multiple mouthpieces or for traders with a variety of mouthpiece stock.


It can be used to measure unmarked vintage models and new models for accuracy. The gauge body is made from gold anodised solid billet aluminium. The item includes the digital gauge with an accurate tip which allows for great visibility of the tip rail. Millimetre measurements on the side of the gauge measure distance from the tip rail for plotting baffle and rail measurements too.


Instructions for Use:
  1. Turn the unit on by pressing the OFF/ON button
  2. Put the gauge on a flat surface and hit the ZERO button. This is required to calibrate the gauge
  3. Place the gauge on the mouthpiece. The accurate tip (ball like end on the plunger) should be in the centre of the tip rail. This will give the tip opening measurement
  4. Switch between inches and mm using the INCH/MM button

Need Help with this item?

Our specialist trained staff are able to help you. Please contact us or call us on 01628 630800

Why Buy from Dawkes Music?

Dawkes Music & Windcraft Ltd are a globally recognised UK based Music Industry company that have expert staff who specialise in products, performance, teaching and repairing in the brass and woodwind sector.

Highly Recommended
Buy with confidence knowing that the shop you're dealing with has been awared a Feefo Gold Trusted Retailer award which recognises our hard work and consistent excellent customer service.
14 Day Approval
Try your item at home, in a lesson, in the band and make sure it's perfect for you. If you are not convinced we can refund the item in full upon return. (£5 re-stocking fee on any mouthpieces, approval not available on reeds).
Fast Delivery
All in stock items are usually dispatched within 24 hours, express delivery options are available at the checkout, including next day delivery.
Best Choice
We carefully choose and stock the best products on the market, be it the newest mouthpiece or official replacement spare parts for instruments. We keep over 8,000 lines in stock covering everything Woodwind & Brass.
Great Prices
We carefully check pricing to ensure our customers get the best deals with unrivalled pre-sale advice and after-sales care.
Top Quality After Sales Service
We have 18 members of staff in-store and on the telephone 6 days a week, and our online service is 24/7. Experience you can trust with over 40 years in the business and a third generation specialist family business.