$refractometer$

refractometer

Object NamePrecision Refractometer

Manufacturer Bausch & Lomb

Made FromEnamel, Glass, Nickel (?) Plating, Chrome Plating, Nickel-silver, Aluminum, Metal

Date1983

TechniqueAssembled

SizeOverall H: 32 cm, W: 48.5 cm, D: 28 cm

Accession Number2016.8.9

Credit LineGift of Richard A. Paselk

Curatorial Area(s)

Place Made

United States

Physical DescriptionPrecision Refractometer. Black enamel, colorless glass, nickel (?) plating, chrome plating, nickel-silver, aluminum, metal; assembled. The instrument stands 12 1/2" high at its highest point (top of eyepiece) and is 15" long exclusive of the lamp and lamp arm. The instrument is finished in black japanned enamel except for the lamp housing which is painted in black crinkle enamel. The enclosed surfaces of the prism housing, the circular catchment around the prism housing and the interior surface of the drain trough have a heavy polished nickel(?) plating, while the metal of telescopes and plumbing appear to be chrome plated. The scale and vernier are engraved on nickel-silver, while the crank/knob is machined aluminum. The scale is numbered from 0-72 over 7 5/8", with graduations to the tenths place, and a vernier reading to the hundreds place.
Provenance

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