Trintec's coastline design is made of ABS and designed with a splash resistant case. Boat Barometer Features: Diameter - 5.5 inches - Height 2.5" inches. Made in Canada by Trintec Industries. Precision molded high impact black styrene case with mounting holes (not susceptible to corrosion and requires little maintenance) Hinged front bezel with a scratch resistant acrylic lens. Secure lockFor many years, the barometer has been used to predict rapidly changing weather on the water. It is a reliable instrument that no nautical mariner should be without.ing screw. Excellent choice for boat cabins.