German manual siren HSM7 in army colour used by German anti-aircraft troops and air protection service, manufactured in the 1990s.
As soon as the siren is operated by means of the pendulum, the air sucked in at the front passes through a rotating paddle wheel. Then the air is squeezed out through the openings on the side. This creates a low hum/wailing tone. When the pendulum is rotated faster, the pitch of the screech increases. The volume can be controlled with the lever on the top.
Unfortunately, this hand siren is slammed, and is therefore not working, the teeth on the gear inside are worn out. On the item a picture of the inspection of the item in 1990.
The item has a height of 80 cm and is 28 cm deep and 30 cm wide, the wheel has a diameter of 21 cm.
Please take a good look at the photos for a good impression of the lot.
- Sirena de mano HSM7
- País de origen
- Unidad del ejército
- Tropas antiaéreas
- En buen estado
- Original / réplica
- Viene con certificado de autenticidad