. The microscope and its revelations. havetwo novel features, the first being that they are each fitted withrectangular centring adjustments, which permit the objectivesto be centred to one another : and the second is that they have 294 ACCESSORY APPARATUS adapters to equalise the length of the objectives, so when a changeof objective- i> made little change of focal adjustment is :-. _.!>. show the nature of this arrangement. In Kelsonschanging Dose piece a small ring with three studs is screwed on tothe objective; a nose-piece is screwed on the microscope, havingt hree
. The microscope and its revelations. havetwo novel features, the first being that they are each fitted withrectangular centring adjustments, which permit the objectivesto be centred to one another : and the second is that they have 294 ACCESSORY APPARATUS adapters to equalise the length of the objectives, so when a changeof objective- i> made little change of focal adjustment is :-. _.!>. show the nature of this arrangement. In Kelsonschanging Dose piece a small ring with three studs is screwed on tothe objective; a nose-piece is screwed on the microscope, havingt hree slotsand three inclined planes. Therefore, by placing the studsinto the .-lots and giving the objective a quarter of a turn, theMuds run up the inclined planes, thus causing the flanges to faceup tightly. Mr. Nelson has pointed out a far better and simpler methodwhich dispen-es with all extra apparatus. Three port ions of the thread in the nose-piece of the microscopeit>elfai-e cut away, and also three portions on the screw of the.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
