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This product is made to order and not eligible for return or exchange unless defective. Once production has begun, order cannot be canceled even if it is not shipped yet. We suggest that you would double-check the product specifications and features to make sure the item complies with your requirements.
This product is subject to export control laws and regulations of the U.S. Government.
By adding to cart, I understand, acknowledge, and agree to the Export Policy.
Refractive index or Abbe number ( νd or νe ) can be measured at different wavelengths ranging from 450 to 1,100nm ( For measurement at wavelengths ranging from 681 to 1,100nm, the Optional Near Infrared Ray Viewer ( RE-9119 ) is required. )
The DR-M4 displays measurement result of refractive index or Abbe number digitally on the LCD.
Measurement can be achieved by matching the boundary line with the intersection point of the cross hairs.
Item is non-returnable unless defective
We aim to show you accurate product information. Here you will find what the manufacturers have provided us with. See our disclaimer.
Note: Please read description carefully. Do not base your order on the picture presented.
