Molded Compass Cylinder - WhiteEdson’s Compass Cylinders are distinctive, non-reflecting, and virtually indestructible. Great for new boats or upgrading your existing pedestal to a larger, easier to read compass. Fits Edson’s 335 and 336 pedestals, stands 5-1⁄2” high and accommodates flush mounted compasses up to a 6-7⁄8” flange diameter.