OPACITY METER ( ENVIRONMENT SMOKE INDICATOR ) MADE IN INDONESIA. The methods in measuring the density of smoke in brief are: 1. With eyesight – ( 1) To measure the density of smoke in accordance with uniformed diagram. – ( 2) To measure the alteration of ray from source of light through the gas exha& not; usted. 2. Physical way – To weight the solid substances in a certain…. Negara Asal: Indonesia Harga: Rp. 10.000.000 Harga: Rp. call Kontak: Ibu Meliati / Helen / Sandi Telepon/Ponsel: 62 21- 85918154 Alamat: JL. MATRAMAN RAYA NO. 148 , RUKAN MITRA MATRAMAN BLOK …