Fused Ruby or Commercial Mineral Co. bearings and collars. Agate-mounted thrust-blocks up to 4 inch.
Magniac's bow-rudders—(Lavalle's patent grooving).
Wove steel beltings for outboard motors (non-magnetic).
Radium batteries, all powers to 150 h. p. (in pairs).
Helium batteries, all powers to 300 h. p. (tandem).
Stun'sle brakes worked from upper or lower platform.
Direct plunge-brakes worked from lower platform only, loaded silk or fibre, wind-tight.
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