| Underwood typewriter(noun, technology, entity, form, concept) |
| Whitehurst & Son sundial(noun, technology, entity, form, concept) |
| Wimshurst machine(noun, technology, entity, form, concept) |
| Winton train(noun, technology, entity, form, concept) |
| abacus(noun, technology, entity, form, concept) |
| accounting machine(noun, technology, entity, form, concept) |
| addiator(noun, technology, entity, form, concept) |
| adding machine(noun, technology, entity, form, concept) |
| alidade(noun, technology, entity, form, concept) |
| almucantar(noun, technology, entity, form, concept) |
| altitude-based sundial(noun, technology, entity, form, concept) |
| analemma(noun, technology, entity, form, concept) |
| analemmatic sundial(noun, technology, entity, form, concept) |
| analytical engine(noun, technology, entity, form, concept) |
| angle(noun, technology, entity, form, concept) |
| aqua horological tintinnabulator(noun, technology, entity, form, concept) |
| arithmaurel(noun, technology, entity, form, concept) |
| arithmometer(noun, technology, entity, form, concept) |
| armillary sphere(noun, technology, entity, form, concept) |
| articulated locomotive(noun, technology, entity, form, concept) |