ADC offers this complete full featured 2.5v diagnostic set with 5 different instruments in a fitted case. The complete set features Bayonet locking mounts for each instrument head to allow secure connection to the battery handle, “C” cell powered, satin finish chrome-plated battery handle with knurled finish, Rheostatic on/off switch. Chrome plated Otoscope head with removable 4x magnifying lens, and insufflator fitting, Auto-clavable, polypropylene ear specula in 2.5mm, 3.5mm, and 4.5mm sizes, adapter to allow use with Welch Allyn or compatible specula. Nasal speculum adapter with manual screw opening for instrumentation connects to the otoscope head, Welch Allyn disposable polypropylene ear specula in 2.75mm and 4.25mm sizes are convenient, safe and economical. Ophthalmosope head with lens wheel featuring 25 corrective lenses from -25 to +40 diopters. Chrome plated bent arm larynx and nasopharynx illuminator for lighting the oral cavity and pharyngeal area, one 3mm and one 4mm mirror with integral tongue depressor holder that attaches to the illuminator. One tongue depressor attachment for the illuminator, one disposable tongue depressor adapter for the illuminator. This is the ultimate 5 in 1 diagnostic set.