and engineering journal . 45 Geldenhuis Deep 6 Government Areas 82 Knight Centrals 4 Eace Props 5 Fieeuwpoort Tins Iiydenburg Farms „ Meyer and Charltons Middelvlei Estate 1 Modder 27 Modder Deep 13 Modder Easts 6 [National Banks New Era Consolidated New Gedttld Deeps 1 New Kleinfonteins 5 -New Modderfontein 69 New Unifieds 5 jNigels 4 Nourse Mines Pretoria Cements Princess Estates Rand Nucleus ... Rand Select. Corporation iRandfoutein Central Randfontein Estate .... 13 iBoherts Victors ,Rooibergs 3 South Africa Lands 4 Fri. 30. Dec. 31. 6 Wed. Jan. 1. 6+ IK 9* 7 6t 5 9*
and engineering journal . 45 Geldenhuis Deep 6 Government Areas 82 Knight Centrals 4 Eace Props 5 Fieeuwpoort Tins Iiydenburg Farms „ Meyer and Charltons Middelvlei Estate 1 Modder 27 Modder Deep 13 Modder Easts 6 [National Banks New Era Consolidated New Gedttld Deeps 1 New Kleinfonteins 5 -New Modderfontein 69 New Unifieds 5 jNigels 4 Nourse Mines Pretoria Cements Princess Estates Rand Nucleus ... Rand Select. Corporation iRandfoutein Central Randfontein Estate .... 13 iBoherts Victors ,Rooibergs 3 South Africa Lands 4 Fri. 30. Dec. 31. 6 Wed. Jan. 1. 6+ IK 9* 7 6t 5 9* 0 6* . 3* One is worth two New Modders to the the low-grade mines like the East Rand Proprietary andRandfontein dote down, it will be a national calamity. Thesemines pay no dividends, but they give direct and indirect employ-ment to thousands of people. If they closed down the shareholderswould not care very much. But every person on the Rand wouldvery quickly begin to feel the draught! THE DAVIS SLIDE RULE. WITH CELLULOID FACINGS FOR ALL TECHNICAL CALCULATIOHS THE calculations that may beperformed by the aid of theslide rule are endless in num-i i In addition to the ordinaryprocess of multiplication, evolutionand involution, it may be used fora variety of technical calculations,in which its use effects an enor-mous saving < f time. Thus, theengineer may compute the strengthof beams, moments of power of engines, hydraulicformulae, areas of circles andellipses. cubic contents. weight*,conversion of British into metricand other systems of measurement,without putting down a singleintermediate quantity. The elec-trical engineer may solve all prob-lems involving the application ofOhms law of (he relation betweencurrent, electro motive force, andresistance. The surveyor may plotsurveys by rectangular co ordinatesand set out curves. This Davis made 10 inch SlideRule can be supplied from stock. Sola Aconts ffr South Afric* : BARTLE & CO. LTD.,
Size: 1351px × 1850px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmineralindustries
