14 



Equipment of the Class Room. 



Ko. 50,050 



50052. l:3l>. 



Chemical Lecture Tables 

 (for High Schools, Colleges etc.). 

 Chemical Lecture Table (Figure). 



With oak top 



With teak top 



List No. 50,050 50,051 



Length of Table m. 3 3.5 



I -uciigu 



( Price 



50,052 



4 



50,053 



4.5 



50,054 



25. 12. 28. 18. 31. 13. 34. 2. 36. 17. 



List No. 50,055 50,056 50,057 



Length of Table m. 3 3.5 4 



Price 28.1.0 31.18.0 35.0.0 



50,058 50,059 



4.5 5 



38.0.0 41.0.0 



The approximate gross weights with lath packing are : about 390 kg for a length of 3 m, 450 kg 

 for 3.5 m, 500 kg for 4 m and 550 kg for 4.5 m. 



The table is 90 cm. in height and 80 cm. in width. Top of oak or teak 40 mm. thick is com- 

 posed of frame and panels, and it is stained an acid-proof black. The body (the frame and panels 

 of which are of pitch pine) is carefully stained and varnished. The bottom fillets are of oak. The 

 body has with 4 m. length 8 drawers, 1 double-doored cupboard, 1 single-doored cupboard, 1 narrow 

 drawer for glass tubes and one rack for containing gas burners. The table has a gas lead provided 

 with 4 gas taps of 4 mm. bore and a tap of 8 mm. bore, for filling the gasometer and for heating 

 the combustion furnaces. The gas taps are arranged in front under the table top and have hose unions 

 bent upwards in order to prevent the hose tearing. The water lead ends in a tall nickelled standard 

 with rotary outflow pipe, the latter serving for the filling of tall vessels and gasometers. Underneath 

 this is a low pressure water standard with three water taps, two of the latter having screwed hose con- 

 nections. On the same narrow side of the table is a laboratory basin (German design) of hard baked 

 white earthenware, with a raised back wall, deepened bottom, overflow, drainer and stoneware valve 

 for the purpose of carrying on continuous washing operations. Further, the table is fitted with piping 

 with tap for compressed air, 1 pipe line with tap for air intended for obtaining vacua, a large and 

 deep pneumatic trough (zinc) with zinc bridge, overflow pipe, draining valve and a slate slab as lid. 

 In addition the table is provided with 1 draught pipe for gases and noxious fumes, 1 porcelain sink with 

 strainer and lead waste pipe; 1 hollowing for working with mercury and 1 electric lead consisting of 

 2 wood covered metal rails let into the table, the rails having plug points every 25 cm. The holes 

 take 4 plug terminals, with ebonite handles, supplied with the table. The lid of the sink and of the draught 

 pipe are constructed of iron and are let into iron rings. All pipe lines are fixed complete down to 

 the floor. 



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