Tuning pen

This invention is a Tuning Pen which can serve as a writing apparatus and tuning device as well as a device for checking notes of the scale corresponding to a specific key signature. According to the present invention, the pen holder which has a tuning flute mounted thereon includes a bigger cylinder which has key signatures printed thereon and is coupled with a smaller cylinder which has the notes of the scale printed thereon and is covered with a revolving sleeve which has an opening made thereon to display the note of the scale printed on the smaller cylinder.

BACKGROUND OF THE INVENTION 
The present invention relates to a TUNING PEN. A device that can be used as 
a writing apparatus, a device for tuning musical instruments and for 
checking musical key and tones of the scale. 
When learning how to play a musical instrument one must first learn musical 
notation, tones of the scale and music key signatures. For a beginner it 
is rather difficult to memorize this complicated musicology. Further, to 
play a musical instrument, a tuning device is commonly required to adjust 
the instrument so that it plays in tone. 
1. It is therefore, the main object of the present invention to provide 
such a TUNING PEN which can be used as a device for tuning musical 
instruments. 
2. It is another object of the present invention to provide such a TUNING 
PEN which can be used as a writing apparatus. 
3. It is still another object of the present invention to provide such a 
TUNING PEN which can be used for checking musical key signatures and the 
corresponding tones of the scale. 
4. It is yet a further object of the present invention to provide such a 
TUNING PEN is convenient for personal carriage. 
SUMMARY OF THE INVENTION 
According to the present invention, the pen holder of the TUNING PEN which 
has a tuning flute mounted thereon (for use in tuning musical instruments) 
is included in a bigger cylinder which has key signatures printed thereon 
and is coupled with a smaller cylinder which has the notes of the scale 
printed thereon and is covered with a revolving sleeve which has an 
opening thereon to display the notes of the scale printed on the smaller 
cylinder.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
Turning now to the detailed drawings, therein illustrated is a TUNING PEN 
embodying the present invention and generally comprised of a pen holder 1, 
a sleeve 2, a tuning flute 3, a protective cover 4, a socket 5, a cap 6, 
and ornament plate 7. 
The pen holder 1 is comprised of two cylinders 101 and 102 interlocked with 
each other by means of a sleeve joint, wherein cylinder 101 has the 
respective key signatures printed thereon and cylinder 102 has the 
corresponding notes of the scale printed thereon. The sleeve 2 has an 
opening 201 made thereon and is revolvably mounted on cylinder 102 to 
alternatively let the notes of the scale on cylinder 102 be exposed 
through the opening 201 for reading. The tuning flute 3 is mounted on the 
sleeve 2 at top is covered by the protective cover 4. The socket 5 is 
connected to the cylinder 101 by means of a screw joint. The cap 6 is 
mounted on the socket 5 when the TUNING PEN received and not in use, and 
includes a clip 601 to which the ornament plate 7 is connected. 
When checking notes of the scale, turn sleeve 2 around to allow the key 
signatures of cylinder 101 to match with cylinder 102, and the notes will 
be immediately exposed through the opening 201. 
According to the present invention, the tuning flute 3 may be removed. From 
the pen holder 1 for use when providing a standard pitch to tune musical 
instruments.