China factory good quality optical equipment ophthalmic manual phoropter view tester cheap price hot sale

Product Overview

Description

China good quality optical instrument Manual phoropter VT-5B 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Specification:

 Sphere powers range: +16.75D ~ -19.00D, with minimum reading 0.25D or 0.12D
                                          (When +0.12D auxiliary lens or optional ±0.12D lens is in use)
                                         +26.75D ~ -29.00D (When optional ±10.00D lens is in use)
Cylinder power range: 0 ~ -6.00D, with minimum reading 0.25D or 0.12D (when auxiliary lens is in use)
                                         0 ~ -8.00D (when-2.00D auxiliary lens is in use)
Astigmatic axis scale: 0 ~ 180° in 5° steps
Cross cylinder: ±0.25D, reversal type (synchronized with astigmatic axis)
Rotary prism: 0 ~ 20D in 1D step
Interpupillary adjustment: 48mm ~ 80mm in 1mm step (right and left synchronized)
Forehead rest adjustment: 16mm backward and forward
Convergence: The optical axes of the lenses are aligned at a distance of 400mm from the vertexes of the corneas (2mm each for right and left inward)
Interpupillary distance enabling convergence: 57mm ~ 80mm
Corneal distance device: 2mm forward and 5mm backward from standard plane; with scale
Effective field of view: 19mm
Weight: 5kgs
Dimension: 291~323 × 315 × 85mm

 

 

 

* Supplier Promise

Returns:

We do our best to serve our each customer the best that we can.
We will refund you for items returned within 7 days of you receiving them, for quality problem reason. A full refund will be given if items are returned in their original condition.
Merchandise which is damaged or missing components is not refundable.
Buyers are responsible for return shipping with proper packaging.
On receiving items, we will refund you immediately.

Warranty &Maintenance:

We provide one-year free maintenance and long-life warranties service. Items can be replaced during the first month or maintained for the first year.
***** Buyers are only responsible for the return shipping fees for warranty items.(In most cases, buyer will only have to return the problem components rather than the entire package.)
Before returning items, please make sure you get our (the seller’s) return address, and write “gift” on the delivery detail sheet. Please use regular postal service and send us the tracking number. As soon as we receive the items, we will repair or exchange them ASAP.