Product description:
<br />Retinoscope Streak Welch Allyn 18240 - 3.5V <br /><br />Welch Allyn's 18240 Elite Retinoscope is 40% brighter than standard retinoscopes. One of the brightest streak retinoscopes in the industry. It maintains a consistent output level throughout its life. The 18240 provides the sharpest retinal reflex, making refractions easier than ever. Special sealed construction keeps the optics cleaner for more effective exams. Cross-linear polarization eliminates 99% of bothersome glare from trial lenses. Continuously rotating, completely external focusing sleeve improves the scope's comfort and manueuverability, for any sized hand.<br /><br />Specification:<br />Dimensions: 5 x 2 x 2 in / 12 x 5 x 5 cm <br />Weight: 2.80 oz / 79 g