| 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) |
| cab forward locomotive(noun, technology, entity, form, concept) |
| cabinet of curiosities(noun, technology, entity, form, concept) |
| cadran solaire(noun, technology, entity, form, concept) |
| calculating punch(noun, technology, entity, form, concept) |
| calculus ratiocinator(noun, technology, entity, form, concept) |
| capacitance electronic disc(noun, technology, entity, form, concept) |
| card punching(noun, technology, entity, form, concept) |