Signedon metal plate on base: Vestal Mfg. Co. / Sweetwater, Tenn.
on plaque: FISHER SCIENTIFIC / MADE IN U.S.A.
Inscribedon metal plate on base: IN ALL CORRESPONDENCE REGARDING THIS ARTICLE MENTION THIS MODEL NUMBER / MODEL 31 / THIS GAS HOTPLATE CAN BE USED WITH LP (BOTTLE, OR TANK) GAS, NATURAL, MIXED, OR MANUFACTURED GAS. IT IS ADJUSTED FOR USE WITH LP GAS. ORIFICE HOODS MUST BE LEFT SCREWED TIGHT IF LP GAS IS USED. FOR USE WITH NATURAL OR MIXED GAS UNSCREW ORIFICE HOODS UNTIL SPECIFIED INPUT RATE TO EACH BURNER IS OBTAINED. FOR MANUFACTURED GAS, SEPARATE ORIFICE HOODS WILL BE SHIPPED UPON REQUEST. / NAT., MFD., OR MIX. 9000 BTU NORMAL INPUT PER HOUR / LP GAS 7000 BTU NORMAL INPUT PER HOUR / MINIMUM HORIZONTAL DISTANCE FROM TOP EDGES OF HOTPLATE TO COMBUSTIBLE WALLS IS 6 INCHES.
ProvenanceFrom the Department of Cancer Cell Biology, Harvard School of Public Health, Boston, MA.