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Description: | Hewlett Packard 5500C laser head with mounted beam dividing optics for straightness measurement and interconnecting cable to display unit ABDNP:201959b. Long grey/green body with projecting adjustable feet (2 near front, one at rear); serial no. 1436A00617; 2 outputs at rear for display connections;18-way connector with 4 m cable to display unit. This system is based on the measurement of interferometric fringes that allows measurement to within 0.01 microns. The device was used in precision metrological research in the Department of Natural Philosophy in the 1980s. | License: | http://www.abdn.ac.uk/historic/Copyright_terms_conditions.shtml | Publisher: | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments | Rights holder: | 47718 | Temporal: | 1980-1985 | Source: | University of Aberdeen | Creator: | Hewlett Packard | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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