31. These are designed to create a waterproof seal between the sink and the faucet base plate . 32. These are made of cast iron and are hinged at the bottom of the base plate . 33. The LLR 81mm is composed of a base plate , a barrel comprising the breech, and a bipod. 34. The mirror mounts and the optical bench base plate all manufactured out of silicon carbide ceramic SiC100. 35. For contrast, he placed the plates and bowls on silver metallic chargers ( oversize base plates ). 36. Place the gasket on the tailpiece against the base plate before inserting it in the mounting hole. 37. The mortar can be disassembled into three units : the tube, the bipod, and the base plate . 38. Then the concrete foundations were poured, and the base plates for the columns were set into them. 39. The electronics are contained in a sand-cast aluminum enclosure, with sheet metal ( steel ) base plate . 40. The bridge plate moves over a pair of roller bearings installed in the base plate of the unit.
