THE NEW ACME STAND. 85 



matter of course, it got a pretty severe overhauling, 

 suffice it to say that I became so much pleased with oar 

 new bantem, that I gave it the name it bears, and have 

 no hesitancy in recommending this joint production of 

 Mr. Sidle and myself to my friends. 



With this preliminary statement, I proceed to give 

 the reader a brief description of our new stand. 



The Acme with closed tube, when in the vertical posi- 

 tion, is about fourteen inches in heighth, and its weight 

 about five pounds. 



The foot is of cast-iron; "horseshoe" shaped and 

 similar to the Hartnack patterns, combining in the 

 smallest compass the necessary weight and accompany- 

 ing solidity. For real work in the laboratory this form 

 of foot is believed to be superior to all others. For 

 those who prefer the tripod model, Mr. Sidle will fur- 

 nish this form at the same cost, or in finished brass at 

 an additional cost of $3.50. 



The entire instrument is supported by a heavy single 

 pillar of solid brass, the lower portion of which passes 

 through the cast-iron foot, the two parts being held 

 firmly together by a clamp-screw underneath the foot. 

 By virtue of this arrangement, the foot can be detached 

 almost instantly, or, by a half-turn of the lower clamp, 

 the foot can be reversed on the axis of the pillar, thus 

 ensuring the greatest stability when the stand is in the 

 horizontal position. The lower shoulder of the brass 

 pillar passing through the foot is accurately turned and 

 fitted, and when desired the moulding at the part of 

 the brass pillar immediately adjacent to the top of the 



