“Thrift store find: made of hardwood, features a solid iron chain and brass plates, hollow inside. Any thoughts?

To understand what this object might be, it helps to examine its components individually.

Hardwood Construction
Hardwood is not cheap, nor is it easy to work with. It’s typically chosen for strength, longevity, and resistance to wear. Historically, hardwood was used for:

Tools
Containers
Protective cases
Structural components
The thickness of the wood suggests it was meant to withstand pressure or repeated use.

Brass Plates
Brass is corrosion-resistant and historically associated with:

Scientific instruments
Military equipment
Nautical tools
Protective fittings
The placement of the brass plates matters. If they reinforce corners or openings, they likely served a protective or functional role rather than a decorative one.

Iron Chain
Iron chains were rarely added for aesthetics alone. Chains imply:

Security
Restraint
Suspension
Attachment to another object
A solid iron chain suggests weight-bearing or control rather than ornamentation.

Hollow Interior
This is perhaps the most important clue. A hollow interior means the object was designed to contain, protect, or house something.

But what?

Theories Begin to Emerge
Once images of similar thrift store finds circulate online, speculation tends to explode. This object is no exception. Several theories immediately stand out.

1. A Specialized Storage Container
One of the most grounded explanations is that this was a protective container for something valuable or delicate.

Possibilities include:

Tools or measuring instruments
Firearms components