TY - JOUR T1 - A Wave-Length Comparator for Standards of Length: An Instrument for Fine Measurement in Wave-Lengths of Light. With an Appendix on the Use of Wave-Length Rulings as Defining Lines on Standards of Length JF - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934) VL - 210 SP - 1 EP - 34 PY - 1911/01/01/ UR - http://dx.doi.org/10.1098/rsta.1911.0001 M3 - doi:10.1098/rsta.1911.0001 AU - Tutton, A. ER -