| 9 | 3D scanners | | M | M | M | | M |
| 9 | 3D spectacles | | M | M | M | | M |
| 9 | Abacuses | | M | M | M | | M |
| 9 | Acceleration sensors | | M | | M | | M |
| 9 | Accelerometers | | M | M | M | | M |
| 9 | Accumulator boxes | | V | V | M | | V |
| 9 | Accumulator jars | | V | V | M | | V |
| 9 | Accumulators [batteries] | | V | | M | | M |
| 9 | Accumulators, electric | | M | M | M | | M |
| 9 | Accumulators, electric, for vehicles | | V | V | M | | V |
| 9 | Acid hydrometers | | M | M | M | | M |
| 9 | Acidimeters for batteries | | M | M | M | | M |
| 9 | Acidity analysers | | M | | M | | |
| 9 | Acidity meters | | M | | M | | M |
| 9 | Acoustic alarms | | M | M | M | | M |
| 9 | Acoustic conduits | | M | M | M | | M |
| 9 | Acoustic couplers | | M | M | M | | M |
| 9 | Acoustic coupling devices | | V | | M | | M |
| 9 | Acoustic meters | | M | | M | | M |
| 9 | Acoustic sound alarms | | V | | M | | |
| 9 | Actinometers | | M | M | M | | M |
| 9 | Adapter cables for headphones | | M | | M | | M |
| 9 | Adapter plugs | | V | | M | | |
| 9 | Adapter rings for attaching objectives on cameras | | M | | M | | V |
| 9 | Adding machines | | M | M | M | | M |