Features:

-Professional test book, is a simple and accurate way to discover congenital color blindness and red-green color blindness, each of which has two forms, complete and incomplete.

-Includes four special test plates for determining the type and degree of color vision deficiency. - Using the characteristics in red-green color blindness, blue and yellow appear significantly brighter than red and green.

-Color plates are attached to a specially designed album-type book for easy operation.

-The graphics seen by people with color vision deficiency must be different from those of people with normal color vision.

Specifications:

Part name: Color difference test book

Material: paper

Size: 19*14.8*4cm

Color: as shown

Quantity: 38 plates

Package Contents:

1*Color Difference Test Book

Note:

1: Please allow 1-2 cm error due to manual measurement, please make sure you do not mind before ordering.

2: Due to the difference between different monitors, the image may not reflect the actual color of the item

We accept payment via Paypal only.

Payment must be completed within 5 days. If you have any problems about payment, please contact us via ebay message.

We only ship to confirmed Paypal addresses. Please comfirm that your paypal address is in line with your shipping address.

Please kindly note that the combined shipping is not provided because the shipping fee is calculated by weight. Also, the each additional item means exactly the the same color and size. 

It takes about 7-15 working days to UK; about 10-30 working days to other countries. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.

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