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Home > Supplier - Product/Service Results: Navigational Aids

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Navigational Aids Suppliers serving Eastern Pennsylvania Displaying 1 to 1 out of 1 result Warren-Knight Instrument Co. - Philadelphia, PA Manufacturer, Custom Manufacturer, Service Company Manufacturer of navigational equipment & aids including three arm protractors, sighting circles, survey & navigational sextants, surface levels, telescopic marine alidades & vertical plumb aligners. Three arm protractors feature arms extending up to 13.5 in. with vernier reading. Sighting circle is made of corrosion resistant material & is graduated in single degrees. Sextants are available with choice of 4 x 40 or 6 x 30 telescopes. Surface levels are made of seasoned iron alloy, machined & tapped on the bearing surfaces. Telescopic marine alidade is used on ships for determining the bearings of distant objects. www.warrenknight.com/

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