LEA Symbols by Barrier Free Access (HK) Limited Price US$POA Supplier/s Barrier Free Access (HK) Limited Supplier Code 250600 (IAPB) Country of Origin USA Request a quote Product Description LEA SYMBOLS® Single Symbol Book (250600) Product Features Testing Distance = 3 m/ 10 feet Page size: W: 12.7 cm H: 12.7 cm A booklet of 13 pages Includes isolating mask, response key, training cards and instructions. For Distance Visual Acuity Assessment Share: