We have converted your account to an Organization!
You can now invite others to collaborate on your content. For more information visit
The Migration to Orgs
Heads up: We’re upgrading Trimble’s sign-in platform soon. During this time, you might be prompted to re-enter your credentials (username and password).
Learn more about our security upgrades.
Work smarter and faster with updates in SketchUp 2022.
See what's new.
This siren dates back to 1945. This model is of the post-1955 design. These are very common among volunteer fire departments as fire sirens in the midwest.