Bunsen gas burner
Bunsen gas burner
Muffle furnace, laboratory pattern with muffle, Bunsen gas burner and chimney flue, for natural draught (1884)
Bunsen gas burner
Muffle, from muffle furnace, 1884
Part of muffle furnace, laboratory pattern with muffle, Bunsen gas burner and chimney flue, for natural draught (1884)
Section of pipe for muffle furnace (1884)
Section of pipe for muffle furnace (1884)