durable design

Optical probe cover sensor switch provides better reliability and longevity

SureTemp Plus Oral/Axillary Thermometry

and durable materials make it ideal for quick transport and everyday use in a school setting

This book includes a list of other sources that focus on specific events

20 ft: COH (10 Line) Chart new-and-top-selling durable design(9" x 14") Sloan 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). The Sloan optotypes were developed on the same basis as Snellen optotypes. Sloan optotypes do not use serifs however, but do use a logarithmic geometric progression.