Andrew's Fine Violins - INSTRUMENT SIZING GUIDE - Mesa, AZ
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INSTRUMENT SIZING GUIDE
 
 
 
VIOLIN
ARM LENGTH
APPROX.  AGE
SIZE
0VER 23 5/8"
11 - ADULT
4/4
22 1/4" - 23 5/8"
9 - 11
3/4
20 3/8" - 22 1/4"
6 - 8
1/2
18 1/2" - 20 3/8"
4 - 7
1/4
16 7/8" - 18 1/2"
3 - 5
1/8
15 3/8" - 16 7/8"
3 - 5
1/10
14" - 15 3/8"
3 - 5
1/16
UNDER 14"
2 - 3
1/32
 
If you already have a violin and need to size it with the young student, you can simply check it against the player's arm. First, have the student hold the violin up on the left shoulder. Extend their left arm straight out, creating a 45 degree angle from the side of their body. Next, ask the player to reach to the scroll of the violin with their outstretched left hand, curving the fingers around the scroll from below. If the left elbow is slightly bent and comfortable, the violin is the proper size. If the elbow is straight and the player cannot reach the scroll comfortably, the violin is too large for their size.
 
 
VIOLA
ARM LENGTH
APPROX. AGE
SIZE
OVER 27 1/8"
16 - ADULT
16 1/2"
26 3/8" - 27 1/8"
15 - ADULT
16"
25 5/8 "- 26 3/8"
14 - 15
15 1/2"
24 7/8" - 25 5/8"
13- 14
15"
23 1/4" - 24 7/8"
12 - 13
14"
21 7/8" - 23 1/4"
10 - 12
13"
20 3/8" - 21 7/8"
7 - 10
12"
18 1/2" - 20 3/8"
4 - 7
 11" 
 
Violas are fitted the same way as violins.
 
 
CELLO
ARM LENGTH
 HEIGHT
SIZE
24" & UP
5' & OVER
4/4
22" - 24"
4'6" - 5"
3/4
20" -22"
4' - 4'6"
1/2
18" - 20"
3'6" - 4"
1/4
 
In order to fit a player to a cello, have them sit so their knees are bent to a 90-degree angle.  Adjust the height of the cello so the left knee touches the curve below the corner of the lower bout.  If the cello fits correctly, the upper rim of its body will rest on the sternum (breast bone) of the player and the lowest tuning peg (C-string) will be near their left ear. From this position, the cellist should be able to comfortably reach both ends of the fingerboard with their left hand.
 

B A
S S
HEIGHT
SIZE
4'5"
1/8
4'9"
1/4
5'1"
1/2
5'5" & OVER
3/4
               
One of the ways to fit a bass to a player is to adjust the endpin so that the bridge of the bass is on the same plane of the knuckles (2nd joint of the fingers) of the student's right hand. An important thing to note is not to set the bass too high (i.g. extending the endpin out too long). A bass set too high will cause the right elbow of the player to bend too much, the angle of the bow to the strings will change, and ultimately, the result will be a poor sound due to poor technique. Size of the student's left hand is an important factor when selecting a bass size. The student's hand should be able to reach the notes in first position. It may be a stretch, but they should not need to shift to span a whole step between 1st and 4th finger.