Related Records

1. 948.014.516 - Bill

   Account Invoice for Robert Rantoul Sr. for his portion of the cargo, wharfage, and charter of the Schooner Swallow. Cargo included Molasses and Coffee.

   Record Type: Archive

   
2. FIC003.20 - Telescope

   This is a single-draw spyglass constructed primarily from brass, wood and glass, probably dating from the mid-late Eighteenth century. The total length of the spyglass is approx. 37 in. when closed. The main tube has a length of 35 in.; there is also a 1 in. eypiece, and a removable 1 in. lens cap. The main tube tapers from a diameter of approx. 2 in. near the eypiece to a diameter of approx. 3 in. at the wider end. The main tube is almost c...

   Record Type: Object

   
3. FIC003.22 - Octant

   This object is sometimes referred to as a "quadrant", because it's capable of measuring 90 degreees (1/4th of a circle), and it's sometimes referred to as an "octant", because its actual dimensions are 1/8th of a circle (with a 45 degree arc). This is an example of a "Hadley's Quadrant" or a "Hadley's Octant", and it was developed in the 1730's by John Hadley (1682-1744). It used reflecting mirrors and it measured only one-half of the actual al...

   Record Type: Object