Regarded as the leading scientific instrument maker of his day, John Frederick Newman is recorded as working between 1816-1862. He made standard and portable barometers for James Clark Ross's Antarctic expeditions (1839-1843) and his metereological station barometers were used throughout the British Empire. He was also the inventor of the Newman mountain barometer. In 1851 he was an exhibitor at the Great Exhibition at the Crystal Palace. Newman occupied two London premises: 7 & 8 Lisle Street (1816-1825) and 122 Regent Street (1827-1862). His business was taken over by Negretti & Zambra in 1862.