The Medik trail frame Clement Clark Skeoch type 4cell with adjustable IPD, curved tiltable sides is a precision made instruments with aesthetic getup. This is come with 1 Year Warranty. Each part is fabricated to high technical skill. Tested to meet ophthalmic standards. All parts are anodized/chrome plated to make it durable. Biomedically compatible with skin and non-interfering with hairdo. Standard diameter of 38 mm ,PD adjustable using sliding bridge mechanism (~50-78mm).