Description
Calibrated for Zone 1
Our most popular model. Features optical adjustment. Heavy-duty impact and corrosion resistant aluminum housings are flat and compact with no protruding or adjustable parts. Needle cards are immersed in a clear, low-viscosity liquid damping for smooth, vibration-free movement. Needle cards pivot on polished sapphire bearing. Azimuth models graduated to 1/2°; estimate to 1/4°. Quadrant models are graduated in 1° units. Cotangent table printed on back. Balanced for use in Northern Hemisphere. Black nylon case included. Dimensions: 3” x 2” x 9/16”.
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