Sockets, prickets, and drip pans — dating domestic light.
Before the socket came the pricket: a spike that impaled the candle, standard on medieval candlesticks and surviving longest in churches. Socket candlesticks with broad drip pans mid-stem are 16th–17th century; pushed-up ejector sticks, baluster stems, and paired cast halves mark the 18th; heavy loaded bases the 19th.
Fragments are typical finds: a socket with part of a stem, a drip pan, a base ring. Note how the socket was made — cast in one, seamed sheet, or with an ejector slot — and any lathe-turning lines. Rushlight holders (sprung iron pincers on a stand) are a related rural form.
Record height of what survives, socket diameter (candle sizes changed), and metal. Sooting and wax traces confirm use; a socket diameter too wide for any candle may actually be a different fitting altogether — say so rather than forcing it.
Identifying harness and horse fittings