Solar simulator sample 8 years Tools 1922 965 Safety razor 8 years Home 1947 823 Photometer for nitrate 8 years Education 1870 789 Fiber optic cable switc 8 years Education 2050 794 Lid for half sphere of 8 years Education 1904 771 Customizable chopper wh 8 years Education 2060 779 Libre rake 8 years Outdoors 2108 854 Open source water testi 8 years Education 1789 931 Electric outlet covers 8 years Home 2541 807 Paddle and oar hooks 8 years Outdoors 1806 796 Customizable ankle boar 8 years Health 1811 789 Open source syringe pum 8 years Education 2119 805