phototachometer
/ˌfəʊtəʊtaˈkɒmɪtə/ /ˌfəʊtəʊtəˈkɒmɪtə/noun
An optical device for measuring the speed of rotation of a part.
Origin
Late 19th century (in an earlier sense). From photo- + tachometer.
- Hardy, Thomas
- Hardy-Weinberg
- hare
- hare and hounds
- harebell
- hare-brained
- hare coursing
- Haredi
- haredization
- Harefoot, Harold
- Hare Krishna
- harelip
- harelipped
- harem
- harem dress
- harem hem
- haremlik
- harem pants
- harem skirt
- harem trousers
- hare's-foot
- hare's-foot clover
- Hare, Sir David
- hare's-tail
- hare's-tail grass