Material : Brass, Glass & Wood - Finish : Antique - Weight With Box : 0.8 kg Approx - Size of Sextant : 4.25 x 4.75 x 2.25 Inches, 10.8 x 12 x 5.7 cm Approx - Size of Box : 6.25 x 6 x 3 Inches, 15.8 x 15.2 x 7.6 cm Approx. Electromechanical Relays 4133 S DC12V CR ZZ 4133 WG 4133 S DC24V CR ZZ (V6 1C 12V/24V 30A/20A) Relay 5pins 1Pcs CALIBRATION : Portable design of this sextant make it convenient to carry, Partially calibrated and functional antique brass sextant, a navigation instrument work like a original navigational tool. This navigation sextant device is a gleaming recreation of the classic functionally calibrated sextants. Messing Schiff Sextant Messing Meeres Sextant Kelvin & Hughes London... Old Sextant Brass Nautical Sextant With Wooden Box, Kelvin & Hughes 1917 London Sextant For Mariners Surveyors, Navigation Ship's Instruments Vintage Sexton Navigation Instrument ABOUT : This sextant can be used to measure the angle between any two visible objects. 810: Kelvin & Hughes London 1917 Nautical Sextant BEST UNIQUE GIFT : Nautical sextants have a long and rich history in navigation and seafaring. SIZE & SPECIFICATION : Handmade Educational working sextant with box, Size of the Sextant is 4.25 X 4.75, Height : 2.25 Inches Approx, measurements of wooden box is 6.25 X 6, Height : 3 Inches Approx, & Total weight with box is 800 Grams Approx. UTILITY : Mariner, surveyor, nautical collectors, seafarer and enthusiasts and same people will enjoy this navigation instrument solid antique brass sextants. This doubly reflecting navigation instrument is made of pure brass with antique finish & comes in a protective wooden case.