Lightweight Sound Locator (Home Defence)

New, sealed, unbuilt and unpainted. Acoustic location was heavily developed by the British. Typically acoustic location only gave a few minutes warning of incoming aircraft but did have a range of up to 10 miles. Such locators were used in the UK to warn of incoming aircraft. The kit provides a lightweight system manned by 3 crew plus a spotter with binoculars in chair and a gunner with a Lewis machine gun on an AA mount. Kit comprises white metal parts.