Sloan Letters 10 Feet-Linear Spaced Pachymeters/Ultrasound Separate controls for convergence of

Separate controls for convergence of optics and the angle of parallax guarantee fully illuminated stereo views in pupils up to 2 mm

or both eyes

Manufacturer Part Number: X-002

So discovering more has been made even more comfortable

5v instrument heads

Sloan Letters 10 Feet-Linear Spaced Pachymeters/Ultrasound Separate controls for convergence ofManufacturer Part Number: 800713 Sloan Letter distance eye chart with linear spaced lines; line sizes range from 20 160 to 20 16 (6 48 to 6 4. 8) equivalent, 0. 12 to 1. 25. This chart can be used in Good Lite's illuminated ESV1018 or hung on the wall. Chart size is 10"x18" (25. 4 cm x 45. 7 cm). 10 feet, 3 meters testing distance.