American Brass Adjustable Double-Arm Student Lamp, Bradley & Hubbard Mfg. Co., Meriden, Connecticut, Late 19th Century. Fitted with a removable acorn-shaped tank, the weighted base cast with the "B & H" factory mark and number "4751;" now electrified.

H: 20.5 in. (top of standard), W: 25.625 in. (including shades), D: 11.375 in.
Inside diameter of shade ring: 10 in.