skip to footer block
GLT Good Lite Evans Letter Contrast Test ELCT fjor ESV3000™ and ESC2000™ P14350934GLT-500332 https://cdnimages.opentip.com/full/GLT/GLT-500330-P.jpg Good Lite Evans Letter Contrast Test ELCT fjor ESV3000™ and ESC2000™ The Evans Letter Contrast Test (ELCT) chart is the first standardized test for letter contrast. The ELCT chart is designed to be used with either the or providing consistent lighting for improved testing results. The ELCT chart presents Sloan Letter, optotypes line size of 20/630 with a testing distance of 1m. The varying contrast in sets of 3 letters of equal contrast level. All triplets are balanced for letter difficulty and differ in contrast by 0.15 log contrast step.ELCT Chart 1 contains 12 contrast levels ranging from standard 100% acuity to 1.65 log contrast or 2.24% contrast level. Studies show that 1.65 log contrast is the average letter contrast for the normal older population. (Weber Contrast calculation).ELCT Chart 2 presents 4 contrast levels from 1.8 to 2.25 log contrast.Set includes both Chart 1 and Chart 2.Dimensions: Height 24.5\" x Width 25.5\" (62 cm x 65 cm). 14350934 5.0000lbs 0.00 0.00 0.00
Good-Lite
637.92 2026-08-24 In Stock

Good-Lite Evans Contrast Test #2

Brand Good-Lite
Shop more from GLT

SKU: GLT-500330-P
Price: $637.92
Variants:
Quantity:
In Stock
*  Click "Add to Cart" to calculate shipping and delivery time.
Share & Earn 10% Cash Back Best Price in Bulk

Product Description

The Evans Letter Contrast Test (ELCT) chart is the first standardized test for letter contrast. The ELCT chart is designed to be used with either the or providing consistent lighting for improved testing results. The ELCT chart presents Sloan Letter, optotypes line size of 20/630 with a testing distance of 1m. The varying contrast in sets of 3 letters of equal contrast level. All triplets are balanced for letter difficulty and differ in contrast by 0.15 log contrast step.

ELCT Chart 1 contains 12 contrast levels ranging from standard 100% acuity to 1.65 log contrast or 2.24% contrast level. Studies show that 1.65 log contrast is the average letter contrast for the normal older population. (Weber Contrast calculation).

ELCT Chart 2 presents 4 contrast levels from 1.8 to 2.25 log contrast.

Set includes both Chart 1 and Chart 2.

Dimensions: Height 24.5" x Width 25.5" (62 cm x 65 cm).

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Need more information?
Our staff are available to answer any questions you may have about this item


Customer Reviews
0 reviews
Be the first to review this item!