ROYAL MARINER BRASS 140mm. Solid heavy cast brass – DO NOT confuse this with the cheap pressed brass or brass plated models seen elsewhere. A BEAUTIFUL REMINDER OF YESTERYEAR. MANUFACTURED WITH FINESSE AND ACCURACY. USA manufactured quartz tide clock movement (lunar time). Hinged and latched front panel allows very easy battery replacement. Flange base with drilled and countersunk holes for easy mounting to your bulkhead or wall. Beveled glass front completes this traditional design. Matching 12 and 24 hour standard time Clock, Barometer and Thermometer/Hygrometer are available – what a superb set to enhance your place, or as a highly appreciated gift. Base Diameter 140mm (5.5). Face Diameter 118mm (4.6). Glass Diameter 100mm (3.95). Total Depth 50mm (2.0). Weight 1060g (2.3lb). Requires one only AA size battery (not supplied). Comes with a handy information sheet explaining factors affecting tidal flows, setting the instrument for best accuracy at your location, and further sources of world tide information. CHECK OUT OUR OTHER LISTINGS FOR THE SMALLER 116mm RANGE, CHROME FINISH MODELS and 12 and 24 volt DIGITAL CLOCKS.