Weems & Plath 138 18" Aluminum Parallel Rule ADDFENACC3 500c & 550c

500c & 550c

Designed to fit a variety of shaft diameters

1 Sold separately

160°F thermostat for MerCruiser sterndrive or inboard engines with standard cooling systems

Trim Tab blades are 12 Gauge - 304 SS with a 5/8" flared trailing edge and 1/8" diameter hinge pin

Weems & Plath 138 18" Aluminum Parallel Rule ADDFENACC3 500c & 550cThe 18 inch Aluminum Arm Parallel Ruler features aluminum arms and handles. The aluminum parallel ruler is manufactured to a 1 4" thickness and 18 inch length. The high quality construction of the aluminum parallel ruler is backed with a lifetime warranty. An essential item in any proper navigation kit, the aluminum parallel ruler is used to plot direction on your nautical chart. The aluminum parallel ruler is, essentially, comprised of two straight