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dxdt invites distributors and prospective distributors to contact our Manufacturing Representative, Mr. Marc Ingber at the following contact point:

Marc Ingber Sales
11725 Gainsborough Rd.
Potomac, MD  20854
Phone: (301) 765-7788
Fax: (301) 765-7790

If you are a school, a district arts program, a band program or if you are directly affiliated with a school, then please contact us by e-mail through this link: .

Remember, our system is a great improvement over traditional woodwind fingering charts.  It is durable, easy to use, versatile and it eliminates fumbling across multiple sheets and books to find a note. This tool provides an unambiguous and large view of the finger stations in a smaller form factor than a conventional chart can.  This translates to better readability under any conditions.

See dxdt Rotary fingering charts featured in Clarineat's video from 2016 Midwest Clinic (interview starts at minute 7:00).

The unique rotary design of dxdt's rotary wind instrument fingering chart system makes it ideally suited for use as a key transposition aid.  Simply aim the main pointer to the key of the piece you wish to transpose and place a piece of tape or an erasable mark on your destination key.

Now whenever the main pointer is directed to a note in your piece to be transposed,  the transposed note will be pointed to by the temporary marker. If you would like to transpose a piece written for an instrument into concert pitch, there are instructions given in a .pdf at the bottom of this page.

This tool is ideal for beginning and intermediate students as well as teachers. Professional musicians that double on other instruments have also purchased them as a compact and handy resource.

Our Rotary Wind Instrument Fingering Chart Systems can be purchased through Amazon at the links below:

Rotary Flute Fingering Chart

Rotary Flute Trill Chart
Rotary Sax Fingering Chart
Rotary Clarinet Fingering Chart

Rotary Recorder Fingering Chart

If you would like to submit payment by credit card or PayPal you can do so using the PayPal portal accessed by clicking on the emblem below.

 Unsolicited testimonials:

  • "I've already sold 4 to my students (keeping one for myself) and the students really like them. "-  D.D.
  • "I am just blessed to have access to such a wonderful device that will enhance my students' experience."- Flute Teacher D.
  • "Fantastic idea!"- C.C.
  • " This looks amazing...  I just wanted to let you know how excited I was to see this! Great job!!"- D.K.

Transposing with the Rotary Fingering Charts.pdf 108.0KB
20160703 Music Store Vignette.pdf 148.4KB
20160619_Music Educator Vignette.pdf 192.5KB