F.—l

35

TELEGRAPH INSTRUMENTS AND BATTERIES. The following table shows the class and number of telegraph instruments and batteries in use in telegraph-offices as at the 31st March, 1930: —

Return of Telegraph Intrument Sets and Batteries as at the 31st March, 1930.

| ' " i _ , Primary Batteries. Telegraph Instrument Sets. Storage Batteries other than Umver- Number of Cells. Engineering District. Simplex. Duplex. Murray Concentrators. sa ' sal Battery Multi- Battery System 1 i n j n i "A" Side Forked plex — Systems Working. Quad- Quad- „ , £ . • Leclancbe. a Con- Inter- Central , , ruplex. ruplex relayed Quad- Sets stant mittent Battery Single Double Repeater Duplex - ruplex - (Qu f" Number. Capacity. ■§"§ 1 Current Current. Omnibus Current Current ™P, le , i No. 0. No. 1. No. 2. 1 S I Duplex) of Cells. pq p Auckland .. 40 87 42 9 6 18 1 4 11 4 2 20 1 116 242 4,650 3,512 Wellington .. 35 169 27 9 24 15 6 3 10 10 2 20 2 537 125 8,922 4,344 437 40 Canterbury .. ..34 85 5 9 6 4 1 3 2 20 1 6 240 3,252 1,793 13 0ta g° .. .. ..37 78 1 3 5 1 1 1 1 10 47 291 4,171 1,065 Totals .. .. 146 1 419 69 24 42 44 12 9 21 18 7 70 4 706 898 20,995 10,714 450 40