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Record Details

Plane-Table Alidade, by Benjamin Scott, English, Early 18th Century

Inventory Number: 53341
Object Type: alidade
Persons: Benjamin Scott (Maker)
Date Created: Early 18th century
Place Created: England United Kingdom Europe
Accession Number: 1924-0/part
Brief Description: The alidade has a scale of 20 inches, a diagonal scale of half and quarter inches, and a plain scale dividing inches into 30, 35, 40, 45, 50, 60 parts, with two scales of chords. On the underside are logarithmic scales of numbers, sines and tangents. The sights are alternating slit and thread, sliding onto sockets and fixed by (missing) screws.
Primary Inscriptions: "B Scott Fecit" on the underside
Provenance: Presented by Lewis Evans.
Collection Group:
Material(s): Brass
Height Width Depth Diameter Unit
509 39 mm