A full service instrument shop specializing in marine compasses, weather instruments, spotting scopes, binoculars, telescopes, clocks, barometers, custom weather stations and tripods. Our service department is unmatched in the fields of compass repair, clock and barometer repair. Online orders over $300 shipped UPS Ground free of charge (in the contiguous continental US only).

Our large selection of tide clocks is legendary on Boston's South Shore. We carry a full line of Tide Clocks from major manufacturers like Maximum, Downeaster and Barigo as well as our own VIP Tide Clocks. You never have to guess which way the tide is going when you gaze at the sea again! Maximum Cronus Regular price: $325.00 Sale price: $290.00 VIP Traditional Brass Tide Clock Regular price: $89.00 Sale price: $79.00 Maximum Harbormaster Regular price: $175.00 Sale price: $150.00 VIP Classic Tide Clock Regular price: $95.00 Sale price: $89.00 VIP Salem Tide Clock Regular price: $120.00 Sale price: $108.00 MEDALLION TIDE CLOCK $110.00 THE WAVE TIDE CLOCK Regular price: $130.00 Sale price: $110.00 CLOCKS FISHING TIDE CLOCK $110.00