Wear glasses

Reduced Wear Glass fibers — — The subject of plastic wear is... 

James A. Jobling Company Ltd., Wear Glass Works, Sunderland, for information about Pyrex glass... 

To enhance mechanical properties and decrease wear, glass fibres are added to polymers but they are abrasive and attack the opposing surface. According to the circumstances they can also increase the coefficient of friction. 

UV will damage eyes wear glasses and avoid direct irradiation. 

Take an ordinary battery (not a lithium-ion one ) apart, find out how it works, and make a quantitative model of it. (The contents are poisonous and corrosive, so wear glasses, do not eat the battery, and do not wear your best clothes.)... 

Wear eye shield at bedtime (optional) Wear glasses or sunglasses during day (optional)... 

Wear glasses or sunglasses to prevent pollens entering the eyes... 

Aidman Vision Screener. Instructions for testing Visual Activity Hold card in good light 40 centimeters, approximately 2 card lengths from eye. Test each eye individually. If the soldier normally wears glasses, these should be worn during the test. Record activity of the smallest line for which the soldier can identify the letter or the direction of 7 out of 10 characters correctly. 

If you are going to work around a muffle furnace for more than one transfer, why is it recommended that you wear glasses that protect against uv and infrared radiation ... 

The half-face cartridge respiratoris the type most frequently used, especially in atmospheres in which there is little or no problem of irritation or absorption ofmaterialthrough the skin. The facepiece of most of these units is molded ofa flexible plastic orsilicone rubber, which provides a seal to the face when properly adjusted. As noted earlier, facialhair between the mask and the face will prevent the seal from being effective, and it is not permitted for a person with a beard or extended sideburns in the area of the seal to be fitted with a respirator. Accommodation for individuals who wear glasses also must not break the seal to the face. The facepieces of most... 

If you wear glasses, make sure your prescription is current use sunglasses in sunny weather. 

Shutter glasses + Several people can see the scene in Wearing glasses... 

In 1620, Peter Brown, a pilgrim, became the first person known to wear glasses on the North American continent. 

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