ножевая опора

1) Engineering: fulcrum bearing, knife edge, knife-edge bearing, knife-edge support

2) Construction: bearer blade, fulcrum bearing (напр. на ребро трёхгранной призмы)

3) Automobile industry: blade bearing, knife bearing, work rest blade (напр. балансировочного станка)

4) Mechanic engineering: blade bearer

5) Makarov: pendulum bearing, prismatic edge