Nautical Thermometer & Hygrometer Model:GL 150-TH Dial:3-1/5" (81mm) Base:4-3/4" (120mm) Depth:1-1/2"(36mm) Weight:215g Features: Dial: size: 3-1/5", 3/3/4",4",5" dial available. style: T:Standard thermometer dial with C & F scales. H: Standard hygrometer dial with relative humidity shown in % scales. TH:Comfortmeter dial:the thermometer displays temperaute in both C and F on the left scale, and the hygrometer showing % of relative humidity on the right. Movement: Bimetal thermometer and hygrometer, with RoSH Certificate, pre-adjusted in a temperature controlled environement. Case:7 kinds of case model are available:GL120,GL122,GL150,GL152.GL180,GL195,GL198 All of the case are made of brass and high quality alloy, polished by hand carefully, and coated with ultra- hard and corrosion resistance plating,The finish is maintenance free and will never tarnish when exposed in marine envirometer for a long time. *The color or luster is optional from which of polished brass,chrome and stainless steel. Waterproof: GL120.GL122,GL150,GL152,GL198 are semi-waterproof, can stand against splash water. warranty: Movement:2-year warranty lifetime servicing Finish of case:10-year warranty life servicing Technical Specifications of Aneroid Barometer Movement Bimetal Thermometer Range -20+50C / -4-122F Tolerance +/- 2C Bimetal Hygrometer Range 20-90%RH Tolerance +/- 9 GL120-TH Dial:3-1/5(81mm) Base:4-3/4"(120mm) Depth:2-1/8"(55mm) Weight:320g GL122-TH Dial:3-1/5(81mm) Base:4-3/4"(120mm) Depth:2-1/2"(36mm) Weight:215g GL150-TH Dial:4"(102mm) Base:6"(150mm) Depth:3-1/8"(78mm) Weight:510g GL152-TH Dial:3-3/4"(95mm) Base:6"(150mm) Depth:2-3/8"(78mm) Weight:380g GL180-TH Dial:5"(124mm) Base:7"(180mm) Depth:3-3/4"(95mm) Weight:910g GL95-TH Dial:5"(124mm) Base:7"(180mm) Depth:2-1/2"(62mm) Weight:790g GL98-TH Dial:5"(124mm) Base:7"(180mm) Depth:1-3/4"(45mm) Weight:420g