M-18 reference set of Precision Calibrated Optical Glass
- Made:
- 1960-1989
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LicenseM-18 reference set of Precision Calibrated Optical Glass (a set
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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
- Measurements:
-
case: 50 x 125 x 110 mm
- type:
- calibrated optical glass
- credit:
- British Alcan Aluminium plc
