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To aid in your choice of shaper we have provided several of the most crucial measurements. A1 and A2 are provided for those who measure based on the folded state or the actual straight shaper.

In order to guarantee absolute symmetry, we manufacture our straight shapers using the latest CNC technology. Through complex hardening processes, the contour remains unchanged cut by cut – for years to come.
*Some of our shapers have been updated. Shapers produced before November 2022 may have differing measurements. For clarity the measurements have been rounded to the nearest 0.1 mm.
To aid in your choice of shaper we have provided several of the most crucial measurements. A1 and A2 are provided for those who measure based on the folded state or the actual straight shaper.
Engraving | A1 | A2 | B1 | B2 | C1 | C2 | D | E | Instrument |
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R1A | 14.7 | 15.5 | 30 | 9.4 | 42.3 | 8.8 | 9.7 | 120 | Bassoon |
R2 | 15.3 | 16.3 | 30 | 9.3 | 45.5 | 8.8 | 10.3 | 120 | Bassoon |
FB1 | 15.0 | 15.9 | 30 | 9.5 | 41.0 | 9.0 | 9.6 | 120 | Bassoon |
FB2 | 14.4 | 15.2 | 30 | 9.2 | 41.7 | 8.5 | 9.4 | 120 | Bassoon |
1V | 14.5 | 15.3 | 30 | 9.3 | 42.0 | 8.7 | 9.2 | 120 | Bassoon |
6.2 | 14.7 | 15.5 | 30 | 9.2 | 42.3 | 8.7 | 9.2 | 120 | Bassoon |
THUNEMANN | 15.2 | 16.2 | 30 | 9.4 | 33.5 | 9.0 | 9.2 | 120 | Bassoon |
HERZBERG | 14.8 | 15.7 | 30 | 9.5 | 43.9 | 8.5 | 10.2 | 120 | Bassoon |
CHIARUGI 1 | 15.0 | - | 30 | 8.8 | - | - | 10.2 | 120 | Bassoon |
CHIARUGI 2 | 15.4 | - | 30 | 9.3 | - | - | 10.6 | 120 | Bassoon |
CHIARUGI 3 | 15.9 | - | 30 | 9.5 | - | - | 10.7 | 120 | Bassoon |
CHIARUGI K | 15.4 | - | 30 | 9.1 | - | - | 9.6 | 120 | Bassoon |
AGRELL | 16.3 | 17.6 | 35 | 11.1 | 48.5 | 10.0 | 10.0 | 140 | Baroque Bassoon |
COB1 | 18.9 | 20.5 | 37 | 12.4 | 58.2 | 10.9 | 11.6 | 150 | Contra Bassoon |