| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Toeboard, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Commercial breathing supply hoses diving operation, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Scaffold, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Power belt, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Fixed ladder, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Chain, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Stud gun, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Ladder, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Chipguard, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Electric cable, device | Is a | False | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Air tool, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Electrical battery, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Diving stage, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Face protection in construction industry, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Boatswain's chair, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Shoring and bracing (masonry and woodwork device) | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Chute, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Foot protection, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Barricade, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Detonating cord, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Diving ladder, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  | 
| Cargo handling gear, device | Is a | True | Industrial tool, device | Inferred relationship | Existential restriction modifier |  |