The Moeller Swingarm Electric Sending Unit connects to a dash mounted gauge without a conversion capsule. The internal components will not rust or corrode. The boat sending unit complete kit with dash mounted gauge for 4" to 28" tank depth has a float that rotates easily in 90 degree increments. A true DIY product, it lets you measure the tank depth. The Moeller sending unit has been calibrated to the industry standard of 33-240 ohms and comes complete with five hole gasket and screws.