This measurements is based on the

Brace measurements (center to center would be larger than these measurements):

King 606: 70 mm

Conn Director 65 mm

Conn 40H (Ballroom, TIS): 75 mm

Martin Imperial: 70 mm (Committee is the same size)

Indiana Band Instrument (Martin) 70 mm

Bestler: 72 mm

Cecilio: 60 mm

Venus: 65 mm

Holton Stratodyne (Model 67) 65 mm

Bach 36: 72 mm

Bach 36: 81.27mm/ 3.2"

Shires .525: 79.1mm/3.12"

Model I.D. Crook Width I.D.

SelmerBolero 14.1mm /.555" 71.5mm/ 2.3/4"

16M 13.25 / .522" 68mm/ 2. 11/8"

Besson 941 13.3 / .520" 80mm/ 3 3/8"

Wide Glide 14mm / .551" 80.6mm/ 3 3/8"

model bore OD(mm) tube-to-tube (mm and inch)

Kanstul 1662i .562 15.91 89.18 3.51

Olds S20 .554/.565 16.21/16.03 89.20 3.51

79h .522 14.91 82.26 3.24

72h .562 15.93 81.66 3.21

Conn sl4747 .547 15.5 78.44 3.09

Conn sl2525 .525 14.83 78.75 3.10

Shires MD+ .509 14.39 71.6 2.82

TODO: Make this an actual list.

If you post additional measurements below, I'll add them to this list.