Equipment of the Class Rooms. Preface. 



Equipment of the Class Rooms. 



Preface. 



\Ve respectfully draw the attention of Building Officials, Directors and Professors win wish to 

 into the question of installing physical and chemical class-rooms, laboratories and meeting rooms 

 to the following 



General Hints for Planning and for the Estimation of Cost, 

 from an experience derived from many years of knowledge in the construction of such installations. 



In going through the plans for the construction of such rooms, etc., it should be seen that 

 sufficient funds are ensured for the equipment of the rooms. For it is better and cheaper to consider 

 the question of a complete arrangement from the start, as an equipment whicli 

 has to be supplemented from time to time works out at a higher cost owing to the numerous alterations 

 necessary, than an installation in connection with which everything is considered during the process 

 of construction. 



But since not all teachers are sufficiently acquainted with the various technical details to 

 thoroughly comprehend the sum total of modern requirements and who perceive after lapse of time 

 the lack of practical apparatus which is abreast of the times, it is advisable not to limit unduly the 

 costs of equipping the buildings. We will take as an example the electric lighting of the town. In 

 all cases, even when it is proposed to found a school in the smallest town, the question of pro- 

 viding a connection to an electric light main shovdd be considered in building 

 the school. For even should there be no electricity works in the vicinity capable of supplying electric 

 current, it may be taken judging from the present condition and rapid development of technical matters 

 cj that sooner or later the question of an Electricity Supply will be brought up. In fact, small com- 

 .sj inanities possess to-day their stations which had not been thought of a few years back, and which were 

 even looked upon as an impossibility. 



In order conveniently and easily to answer such questions, we are willing to submit all information 

 desired and estimates of cost. As proof that we possess the necessary experience we would mention the 

 ^ large number of installations carried out by us, of which we append a list. This is also shown by the 

 numerous appreciations which we have been accorded. 



The quality and durability of the experimental tables, laboratory tables, etc. can not be 

 judged alone from the appearance and from drawings, but these depend upon the selection and treatment 

 of the woods used and upon the expert working up and manipulation of the half-finished parts, from 

 the sawing of the wood blocks to the last coating of paint or varnish. 



In regard especially to the provision of the experimental table, we strongly dissuade our clients 

 from having it made on the spot, as the various fittings on same, such as leads, etc. are generally never 

 constructed in a practical manner. Such a table will always be more incomplete when finished than one 

 supplied from a special factory. It often happens moreover that the price of the table has increased 

 beyond what it would have cost if originally purchased from us. 



It is, in addition, advisable whenever possible to choose one of the standard listed constructions 

 of table and not one constructed according to an independent design, on the score of cheapness and 

 expedition in delivery. Of course we give due consideration to all alterations which seem desirable on 

 account of the peculiarity of conditions relative to space. Since, furthermore, we have more than 

 100 drawings of experimental tables of special construction at our disposal, we are in a position to 

 make proposals conforming to all ca.-< -. 



\Vi> take the liberty of introducing a few remarks concerning the electric wiring installation, 

 as this will generally be considered at the same time as the constructional plans. The electric 

 wiring proposed for the physics class room must be designed for from 45 to 50 amperes, as about 

 15 to 25 amperes must be allowed for the projection lamp and 20 to 30 amperes for other experimental 

 purposes. If it be planned to install a large projection apparatus (e. g., a Megadiascope s-ith an arc 



