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phototimer
phototimer n.
Brit. 
/ˈfəʊtə(ʊ)ˌtʌɪmə/
, /ˈfəʊtə(ʊ)ˌtʌɪmə/U.S. /ˈfoʊdoʊˌtaɪmər/
(a) a photoelectric timer for regulating exposure time in radiography; (b) a timer for races incorporating a camera which photographs the finish./ˈfoʊdoʊˌtaɪmər/ΘΚΠ
the world > time > instruments for measuring time > [noun] > timer or chronograph
stop-watch1740
time marker1835
time recorder1836
hourglass1852
time clock1857
time lock1858
egg-glass1867
chronograph1868
egg-timer1869
timer1869
gunner's pendulum1876
time switch1884
chess-clock1905
phototimer1942
pinger1950
shot clock1967
the world > health and disease > healing > diagnosis or prognosis > radiography or radiology > [noun] > equipment used in
fluoroscope1893
photofluoroscope1896
skiascope1896
fluorimeter1898
stethendoscope1899
roentgenoscope1905
penetrometer1907
penetrameter1912
roentgenkymograph1914
stereofluoroscope1932
tomograph1935
kymograph1936
phototimer1942
photoscope1944
pantomograph1954
orthopantomograph1959
panograph1961
society > leisure > sport > types of sport or game > racing or race > [noun] > timer
phototimer1942
the world > matter > physics > electromagnetic radiation > electricity > electrical appliances or devices > [noun] > timer
dinger1914
phototimer1942
pinger1950
society > leisure > the arts > visual arts > photography > camera > [noun] > scientific and technical
heliograph1848
revolver1876
spectrograph1884
photochronograph1891
photogrammeter1891
process camera1895
gun-camera1921
microcamera1928
phototimer1942
ballistic camera1945
monorail camera1958
1942 Amer. Jrnl. Roentgenol. 68 220/1 A new instrument, a photoelectric timing mechanism, capable of regulating automatically the length of roentgenographic exposure time has been developed... The photoelectric timing mechanism, or phototimer, is a modification of the roentgenographic exposure meter.
1948 Walla Walla (Washington) Union-Bull. 27 Feb. 8/2 A combination photo-timer will be used at the finish line in the IC4A indoor track and field championships.
1958 Times 22 Aug. 4/1 The race..should be started farther back from the bend, in spite of the cost of moving the electrical photo-timer.
2003 Adv. Imaging (Nexis) 1 May 50 Routine testing of phototimer performance in all chest imaging systems.
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as lemmas