FOB Price
Obtenir le dernier prix|
Minimum Order
Localité:
-
Prix de commande minimale:
-
Commande minimale:
-
Packaging Detail:
-
Delivery Time:
-
Supplying Ability:
-
Payment Type:
-
Personne àcontacter Mr. Johnny
NO.29 Jiuyuan Road, Shanghai, Shanghai
PD meter PD***8 description The cornea reflection light coincidencemethod is used. This operates by aligning luminous point on the pupils with measuring line. Results are displayed digitally. 3 measurements are given: right, right+left, left. Results are accurate to within 0.*5mm. Measurements can be made for a single eye or for both eyes. Possible to measure PD of focusing-point distances ranging from *0cm to infinity. Automatically switches OFF one minute after operation is completed, thus conserving power Distances from tops of the cornea to lenses or frames can also be measured. PD Meter PD***8parameters Method of measurement: cornea reflection light coincidence method Range of measurement: *8 to *7MM (both eyes), *4 to *8.5MM (each eye) Graduations: 0.5MM Range of focusing point: *0 to infinity Power supply: 6V DC (Lr*3 batteries X4)
