| Bygrave slide rule(noun, technology, entity, form, concept) |
| astronomical ring(noun, technology, entity, form, concept) |
| mechanical calculator(noun, technology, entity, form, concept) |
| rectangulus(noun, technology, entity, form, concept) |
| slide rule(noun, technology, entity, form, concept) |
| tabulating machine(noun, technology, entity, form, concept) |
| technological phase-out(noun, technology, entity, form, concept) |
| obsolete technology(noun, technology, entity, form, concept) |
| armillary sphere(noun, technology, entity, form, concept) |
| Antikythera mechanism(noun, technology, entity, form, concept) |
| Bernard Gitton's time-flow clock(noun, technology, entity, form, concept) |
| Bernoulli box(noun, technology, entity, form, concept) |
| Blickensderfer typewriter(noun, technology, entity, form, concept) |
| Castlewood orb drive(noun, technology, entity, form, concept) |
| Cavallo's multiplier(noun, technology, entity, form, concept) |
| Chinese typewriter(noun, technology, entity, form, concept) |
| Coggeshall slide rule(noun, technology, entity, form, concept) |
| Cole's quadrant(noun, technology, entity, form, concept) |
| Corbett's electrostatic machine(noun, technology, entity, form, concept) |
| Crookes tube(noun, technology, entity, form, concept) |