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Teacher's Helper: Perfect classroom management tools
1600 LBS MAXIMUM WEIGHT BEARING: Our quick links have a boasting thickness of 8mm and are precisely 3 inches long
IT HAS HIGHER HARDNESS AND WEAR RESISTANCE AND EXCELLENT CUTTING PERFORMANCE THE WHOLE TUNGSTEN STEEL IS FORMED AS A WHOLE
Will not stain or change the properties of even soft metals such as aluminum
Wire connection: Red wire connect to Positive
38 Plates ISHIHARA Book for Colour Blindness Eye Testing industrial_Aug2024_update Teacher's Helper: Perfect classroom management38 Plates ISHIHARA Book for Colour Blindness Eye Testing The ishihara test is the most well known color blindness test all around the world. It consists of 38 so called pseudoisochromatic plates, each of them showing either a number or some lines. According to what you can see and what not, the test gives feedback of the degree of your red green color vision deficiency. This test can only be used to detect red green color blindness. Product Features
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