Welch Allyn PocketScopes - User Manual - Manual (Page 10)

PocketScope
Ophthalmoscope
1. RubberBrowRest.
2. Apertureselectiondialwithcontinuous
rotation:Allowsaccesstomicrospot,small,
large,fixation,slitandcobaltblue.
3. LensSelectionDial—Whenusedwith
multiplierlever,allowssingledioptersteps
through48lenscombinations(from+22
to–25diopters).
4. MultiplierLever—Allowsfastmovement
throughtherangevia16dioptershifts.
Whenusedwithlensselectiondial,allows
singlediopterstepsthrough48lens
combinations.
5. Two-positionfilterswitch:Engageeither
openorred-freefilter.
6. Largerspotsizeforwiderfieldofview.
7. Sealedoptics.
8. DiopterDisplayWindow—Displaysdirect
readingofdioptervalues(positivevalues
displayedingreen;negativevalues
displayedinred).
LensInstructions:
Tomovethroughtherangeontheplus(+)
side:
Rotatelensselectiondialinpositive
(clockwise)direction.At+6dioptersmove
lensdialclockwiseagain.Thenmove
multiplierleverto“+”position.Continue
movinglensdialinsameclockwisedirection
toaccess+7thru+22diopters.
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