| Notes |
Describing the more interesting exhibits at the Physical Society Exhibition. Models, adjustable long arm industrial magnifier by W.Watson and Sons, research: isolation of noise, spot galvanomter and magnetic flux meter by Cambridge Instrument Co., gyroscopically controlled bank and turn indicator by Ferranti, Megger paint tester by Evershed and Vignoles, the Donaldson trichrometric colorimeter by Adam Hilger, wear and lubrication tester by C.Baker, colliery winding cage speed recorder by Everett Edgcumbe, transparent case galvanometers by Crompton Parkinson, exhibits by apprentices and learners |