Double Boiler with Heat Spreader. Note the wide knob at the top of the pot. Has a very faint blue cast around the edges. This wide knob has a
Vintage Pyrex Glass Flameware DOUBLE BOILER 6283 Complete w/HEAT SPREADER GRID
The clear glass material allows for easy monitoring of cooking progress and the tempered glass lid ensures that heat is retained during cooking.
Pyrex Flameware Glass Double Boiler #6283 Complete Heat Spreader 1.5 qt Rare
Vintage Pyrex Double Boiler #6283 1-1/2 Qt in Orig Box 2 Pots Cover & Heat Grid
Vintage Pyrex Flameware Double Boiler 6283: Home & Kitchen
Vintage PYREX FLAMEWARE Glass 1.5 Qt Double Boiler 3-Pc Set #6283 Glass Lid
Pyrex double boilers - NZ
Pyrex Flameware Glass Double Boiler #6283 Complete Heat Spreader 1.5 qt Rare
Vintage Pyrex Glass Double Boiler Insert Pyrex Pot Flameware 1.5 QT 6283 Cookware Mid Century Modern Pyrex Vintage Flameware USA
Vtg Pyrex Flameware Glass Double Boiler 1.5 Quart 6283 Blue Tint Heat Spreader
PYREX FLAMEWARE GLASS Double Boiler Pots 6283 with Lid 1 1/2QT $65.00 - PicClick AU
Vintage Pyrex Glass Flameware DOUBLE BOILER 6283 Complete w/HEAT SPREADER GRID