Account of a new instrument for measuring small angles, called the prismatic micrometer. / By the Rev. Nevil Maskelyne ... Read at the Royal Society, December 18, 1777.

19, [1] p., [1] folded leaf of plates :, 28 cm. (4to)

QB113 .M375 1778

Prisms., Angles (Geometry) -- Measurement.

England--London: Printed by J. Nichols (successor to Mr. Bowyer)., 1778.

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