... /CtnG.W./N.W.: 10/9KgsEM1818 Button Compass, Dia18mm, 1.2gEM1820 Button Compass, Dia20mm, 1.4gEM1820-4 Button Compass, Dia20.4mm, 2.3g EM1825 ... , Dia25mm, 2.2gEM1827 Button Compass, Dia27mm, 3.2g EM1835 Button Compass, Dia35mm, 8.4gEM1835-1 Button Compass, Dia35mm,4.8gEM1840 Button Compass, Dia40mm, 12gEM1836 Compass ...