Joints can be separated into two classes: functional and structural. Joints are divided into three different functional classes. They are synarthroses, amphiarthroses, and diarthroses. Synarthroses means the joint is immovable, amphiarthroses means the joint is slightly moveable, and diarthroses means the joint is freely moveable.
minimum recommended protection lightweight and easy to use requires no maintenance osha cdc epa and nyc doh mh recommend using a n95 disposable respirator as minimum protection from mold and dust
1 Replacement glass cylinders for draft resistant candle followers. 2  Available to fit 3/4 inch to 3-1/2 inch candles. 3  This is the Removeable Pyrex glass deflector that rests on the 3 prongs of a draft resistant brass candle follower or burner. 4  Brass burner is NOT included-this is just the replacement glass.