| 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) |
| astatic needle(noun, technology, entity, form, concept) |
| astrarium(noun, technology, entity, form, concept) |
| astronomical clock(noun, technology, entity, form, concept) |
| astronomical instrument(noun, technology, entity, form, concept) |
| automaton(noun, technology, entity, form, concept) |
| axial gnomon(noun, technology, entity, form, concept) |
| backstaff(noun, technology, entity, form, concept) |
| bahnbetriebswerk(noun, technology, entity, form, concept) |
| ballistic galvanometer(noun, technology, entity, form, concept) |
| beta(noun, technology, entity, form, concept) |
| betamax(noun, technology, entity, form, concept) |
| bifilar sundial(noun, technology, entity, form, concept) |
| bowl-shaped outflow(noun, technology, entity, form, concept) |
| broad gauge railway locomotive(noun, technology, entity, form, concept) |
| building containing meridian lines(noun, technology, entity, form, concept) |