163 



2916(c) 



2916 (d) 



2916(c) FURNACE, Hoskins' Electric (Type FD), Muffle chamber style. (See general 

 description under Type FD, particularly for ash determinations, ignition 

 of precipitates, incinerations, fusions, combustions; for enameling, harden- 

 ing and annealing of small metal parts.) Included with each furnace is a 

 six-foot twin connector cord with attachments. 



Larger Sizes The sizes designated by FD-206 and 207 are equipped with 

 an iron stand, which puts the furnace shelf about 40 inches above the floor. 

 The FD-206 and 207 are wound with three parallel circuits, the rheostat 

 being in one of them. The three circuits allow very close temperature con- 

 trol, any temperature between that of the room and 1000 C. being easily 

 maintained. 



2916 (d) FURNACE, Hoskins' Electric Combustion, for rapid determination of carbon 

 contents of steels by the direct method. The fact that these furnaces are 

 in use in the largest and busiest steel laboratories should convince you that 

 they are proving entirely satisfactory. 



Type and 

 Number 



Refractory Chromel 



Size of Heating Furnace Furnace and without Wire for 



Chamber Only Rheostat wire winding 



FD-302 l%" dia. x 12" long $25.00 



33.50 



3.00 



3.50 



2916(e) FURNACE, Multiple Tube (Type FD-235). This furnace fills the same pur- 

 pose as the FB-235. They differ in their type of heating elements. In this 

 furnace five carbon combustions can be run simultaneously, at one-fifth 

 the attention, about one-third less cost, in one-third the space and lower 

 up-keep cost, compared with five single tube furnaces. Also built in the 

 heavier FB Type for continuous service day and night. 



Type and 

 Number 



Size of Heating 

 Chamber 



Furnace 

 Only 



Refractory 



Furnace and without 

 Rheostat wire 



FD-235 5 holes, 1J4" d. x 12" 1. $80.00 



96.00 



13.00 



Chromel 

 Wire for 

 winding 



13.00 



