Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 53
e needlepoint can easily be reversed and the other end used. After the needle pointhas been regulated to the desired position, the clamping screw is tightenedand the needle point is ready for use. Besides saving the draftsman much time, the micrometer regulator willenable him to insert the needle… … tt In order to prevent the compass handle from turning to either side, thisimprovement keeps the handle always in the center line, thus making itready for instant use on opening, avoiding any change or correction on thecompass after the exact space is once taken. Notice.—To prevent the…
Engineering instruments · Drawing instruments
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