M-18 reference set of Precision Calibrated Optical

Made:
1960-1989

M-18 reference set of Precision Calibrated Optical Glass (a set of 18 phials of glass beads of precisely determined refractive indices between 1.54 and 1.71, in a wooden case) for measuring the refractive indices of liquids, made by R.P. Cargill Laboratories Inc., New Jersey, USA, probable date 1960-1969.

Details

Category:
Optics
Object Number:
2001-114
Materials:
glass, wood
Measurements:
case: 50 x 125 x 110 mm
type:
calibrated optical glass
credit:
British Alcan Aluminium plc
status:
Permanent collection

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