AN INEXPENSIVE BURET HOLDER OLUS J. STEWART University of Kentucky, Lexington, Kentucky
THE buret holder herein described evolved from an urgent need for a dozen holders to be produced in a short space of time a t the lowest cost. The resulting product was so simple and satisfactory that it seemed desirable to bring the matter to the attention of others who might be interested. The photograph* shows the essential parts. A wooden arm, approximately 1" X 2" X ll", bolted a t one end to a shelf standing 16"
* The writer is indebted to Mr. Gino A. Ratti who prepared the photograph.
above the laboratory table, carries a t its other end a block of wood, approximately 3.5" X 6.5" X '/en, to whose face is fastened by means of screws, four springtype clothespins, two of which are disassembled. More specifically, with regard to the arrangement of clothespins, it may be said that each half of a disassembled pin, fastened with screws near the top and bottom of the front face of the block, serves respectively as the upper and lower support, while a whole clothespin, fastened mid-way between the aforementioned halves in such a wav that the mooves of all o a t s are in a vertical line, completes the assemblage. A certain amount of rasping is required to provide clearance for burets of large diameter. To operate the device one merely presses with the finger upon the lever of the central clothespin and simultaneously inserts or withdraws the buret. A buret may also be moved up, down, or even withdrawn from the holder for reading without depressing the lever. The serviceableness of the device cannot be gaged by its homely appearance and its cheapness. Although the cost of material for one holder is only a dime, many students prefer it to holders costing fifty times as much. The construction is rngged, a portable supporting stand is not required if a shelf is available, there is a notable absence of corrodible parts, and repairs may be effected easily with materials available everywhere at nominal cost.
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