A plain taper attachment for the lathe is illustrated in Figure7-69. A bed bracket attaches to the lathe bed and keeps theangle plate from moving to the left or the right. The carriagebracket moves along the underside of the angle plate in adovetail and keeps the angle plate from moving in or out onthe bed bracket.
The Bryozoa, also known as Polyzoa, Ectoprocta or commonly as moss animals, are a phylum of aquatic invertebrate animals.Typically about 0.5 millimetres (0.020 in) long, they are filter feeders that sieve food particles out of the water using a retractable lophophore, a crown of tentacles lined with cilia.nother group of animals discovered subsequently, whose filtering mechanism looked similar, was also included in Bryozoa until 1869, when the two groups were noted to be very different internally. The more recently discovered group was given the name Entoprocta, while the original Bryozoa were called Ectoprocta.
Tardigrades (Waterbears) are a phylum of invertebrate animals,  belonging to the articulata and containing app. 750 species. They  are a sister group to arthropoda, though s â¦ ome aspects remind to  nematods. Tardigrades are quite small meiofaunal animals, the body  length ranges between 0.08 mm and 1.5 mm. They have usually four  pair of legs (in some species a reduction occurs) and a nervous  system with ventral ganglia and a lobed brain.