William E. Sawyer
caption: Penemuan meteran listrik Sawyer 1878
caption: Paten mekanisme sinkronisasi faksimili instrumen telegraf otomatis No. 196.832 tanggal 6 November 1877.
caption: Penerangan listrik di Pameran Dunia 1893 dengan lampu Sawyer
caption: 1876 Autographic Telegraph [15] Model paten faksimili Museum Hagley
caption: Peningkatan Autografik 1875 [16] Model paten faksimili Museum Hagley
caption: Alat sinkronisasi Telegraph Autographic
caption: Sawyer 1878 electric lamp
caption: Sawyer 1878 patent drawing