Flask

A narrow-necked, globular gla bottle. F., Boiling, a small flask, with a wide neck, provided on the side with an exit-tube; it is employed for determining the boiling-point. F. -clamp, an instrument in the form of a pre , employed in vulcanite work for closing flasks after packing. F., Moulding. See Moulding-flask . F.-pre , a screw pre for closing the sections of a vulcanite flask after packing. F., Vulcanite, in dentistry, an iron, bra , or bronze box for holding the model and teeth in the vulcanized-rubber proce . It is generally divided into two sections, one of which is closed by an adjustable lid, the other having a bottom, and is locked by pins or bolts.