Superseded
Standard
Historical
BS 4009:1975
Specification for an artificial mastoid for the calibration of bone vibrators used in hearing aids and audiometers
No description.
Technical characteristics
| Publisher | British Standards Institution (BSI) |
| Publication Date | 07/31/1975 |
| Cancellation Date | 02/28/1991 |
| Page Count | 0 |
| Themes | Silicone rubber |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
No products.
Previous versions
28/02/1991
Superseded
Historical
31/07/1975
Superseded
Historical
22/03/1966
Withdrawn
Most Recent