The Welch Allyn 03100 3.5 volt Transilluminator bulb fits the following ophthalmic instruments: Model 41100
Finoff Transilluminator, and the longer 43300
Curved All-Purpose Transilluminator. This high quality ophthalmic lamp provides HPX halogen Light for true tissue color and consistent, long lasting illumination.
The 03100 bulb also fits a variety of other Welch Allyn Instruments, including models: 27000 Larynx Illuminator, 27050 Nasopharynx Illuminator, 26500 Nasal Illuminator, 26530 Nasal Illuminator, 20000 Otoscope
, 20200 Otoscope, 20202 Otoscope, 21700 Otoscope, 25000 Otoscope, 25020 Otoscope, and 25200 Otoscope.