20 ft: TZO (9 Line) Chart Rx Form Singe-use containers

Singe-use containers

with a 9-second readout

with large dials for controlling frequency and decibel level and membrane covered buttons silent operation of tone and right/left ear selection

light-weight waste basket features extra-tough rim and sides that stand up to years of daily use

The Eko software works with iOS and Android devices

20 ft: TZO (9 Line) Chart Rx Form Singe-use containers(9" x 14") Snellen optotype chart for vision testing at 20 feet. Features two smaller groups 20 25 to 20 12. 5 for repetitive eye testing. May be wall mounted or used with illuminated cabinets (66003, 66004, 66016, 66090). Traditional Snellen optotypes have changed little throughout the years, are great for school vision screenings, and are used regularly today. These optotypes feature strong serifs in the letters C, D, E, F, L, O, P, T.