MODIFIKASI ALAT PERAGA PENGUKUR GETARAN PADA ALIGNMENT POROS MOTOR LISTRIK – GEARBOX – POMPA ( PERGESERAN KE SISI KANAN DAN SISI KIRI POMPA ) ( MODIFICATIONS VIEWER TOOL GAUGES VIBRATION IN ELECTRIC MOTOR SHAFT ALIGNMENT - GEARBOX - PUMPS ( SHIFT TO THE RIGHT SIDE AND LEFT SIDE PUMPS )) - Prakoso, Bastiyan Aji (2015)