This is a vintage Scots Guard automatic fire alarm, complete with its original box and instructional inserts. Manufactured by Waterbury Companies, Inc., this mechanical, wind-up safety device features a black housing and a classic silver-toned metal bell. The alarm operates on a thermal mechanism designed to trigger the bell when temperatures reach a certain threshold, requiring no electricity. The set includes the original cardboard box with its striking red and cream graphic label, the main instruction sheet detailing "How Scots Guard Operates," and a smaller instruction slip. This is a wonderful piece of mid-century home safety history, perfect for collectors of vintage technology, fire-fighting memorabilia, or unique mechanical devices. The unit appears to be in very good vintage condition with minor wear consistent with age. The box shows some light edge wear and scuffing but remains structurally sound.