Ophthalmoscope Head 3.5v Standard Orthopedic Care Measurement accuracy:Pressure:within 3mmHg(0 14272 Measurement accuracy:Pressure:within 3mmHg(0 Unit includes a pack of 25 probe covers * With Oral Probe and Probe Well * Welch Allyn s new Sure Temp Plus combines the speed of ear thermometry with the accuracy and reliability of traditional oral thermometry Head Only * Apertures include: micro spot small large fixation slit and red free filter * Halogen light for true tissue color and consistent long lasting illumination * 6 apertures for all general and specialist use * 28 lenses 25 to +40 diopters for better resolution * Rubber brow rest prevents scratching of eyeglasses * Illuminuated lens dial clearly identifies setting * Replacement lamp WA03000 *