1. B. Latour, Bruno, Science in Action: How to follow scientists and engineers through society (Cambridge, Mass.: Harvard University Press, 1987), p. 251.
2. E.P. Thompson, Customs in Common (New York: New Press, 1991), p. 217.
3. S. Schaffer, ‘Late Victorian Metrology and its Instrumentation: A manufactory of ohms,’ in R. Bud and S.E. Cozzens (eds), Invisible Connections: Instruments, institutions and science (Bellingham, WA: SPIE Optical Engineering Press, 1992), 23–56
4. J. O’Connell, ‘Metrology: The creation of universality by the circulation of particulars,’ Social Studies of Science, 23 (1993), 29–73.
5. W. Kula, Measures and Men (Princeton: Princeton University Press, 1986).