PDR Dent Reading Boards, we manufacture these in a solid and a translucent form, 99% down to 10%. How good Your eye sight is will depend on what percentage works best for you. ( but we have put a selection here that works best all-round ). Remember on cloudy days it will be difficult to " read " the Dent due to little or no reflection. ( you then use the reading light.) Look for the ones we ** recommend**