ER incandescent reflector lamp

means a reflector lamp with an elliptical section below the bulbʹs major diameter and above its approximate baseline as shown in Figure 1 (RE) on page 7 of ANSI C79.1‐1994 and a finished size and shape shown in ANSI C78.21‐1989 including the referenced reflective characteristics in part 7 of ANSI C78.21‐1989.