Ross Brown Sales Pty Ltd Home ›› Local Listings ›› NSW ›› Baulkham Hills ›› Ross Brown Sales Pty Ltd NSW Business Services Baulkham Hills, NSW 2153 David Geraghty02 9899 2744https://www.rossbrownsales.com.au Ross Brown Sales supplies custom manufactured pressure gauges, brushless motors, float switches, thermapens and other precision instruments all over Australia since 1957.