1 - NGA

MIL-HDBK-850
splrft favof-A dosed gfeaa Uire (vlel) of
circubr oroeasacfkm, hscarrrerline ataeforning
a arcubr arc, tts interior aa-fete being grcurrd to
PrecksafonT ffiafiJJed wJffrelhs$ erlquidoflow
~ e~ugh free apace being left for ti
fcrrneticn of n btie of air and @S. Ahe celled
bubbla lsvol. See sfao chsmbarad splrlt
Iovel; circular level; hmtglng Iswol;
Idtudo level; loval trlcG plato loval;
reverslblo level; rod level; strldlng level;
telslscopo Iovel.
spiff cwnama-(.JCS) An aeeembfy of two
cameras d~aed et a tied overbspping engle
retettie to each c4her. [Meinty used for
remnmiasenm purpoeee.] AJao cefled srplltvertlcel
cam.ra.
split photography-See split-verflcal
photography.
spilt-varflcel camOre-See spilt cameraa.
split-vorflcal photography—(JCS)
Photegrephs Ieken simuttanaousfy by two
cameras nmunted at an angle from the verlird.
one lined to the Ml and one to the right, to .,
obtain a s-II side overfep. Abe called splJf
photogrepl?y.
●pok@?+JCS) (radar) Pwiodii flashes of the
rotating time base on a radml display.
Sornetimaa caused by mutual interference.
spot ●levatlo~JCS) A point on a map er
chart whoee elevetii ia neted, (Elevations are
shown, wherever pmcfiible, for mad forks amf
interaacfiorss, grade meesin~, mxnrrrits ef hiJJs,
mountains, and mountain pames, water
surfeces of fakes and ponds, afreem forks,
boffem elevations in depraaaima, and Jarge flat
areas.]
. .
AJSO
.
calJed
. .
spot
. .—.
height. See
. .
also
crroctcoa ●per ●mvation: ●mvauon;
uncheckad spot .l@vatlon.
spot helght+ea spot ●fevstlon.
spot pradlctlon-A single heeding radar
prediitbn intended to fmrfnry, as nearfy as
posaibla, a cwnprehensive anatyaJa of the
radaraoope at a precise geegraphn fcc.aliorr.
spot dsa+JCS) The sJze of Iha electren SPYI
on the face of the oethodsrey tube.
●prhtg balanca-An accessory of taping and
239
. . . . .
base measuringapparatus which is used m
aPPb’%7 p-r tension to a fsipe.
spur Iina of bavola-A line 64 Ievals nm es a
branch from fhe main lie d Iwals, either fer the
PWPWI ef detarminiig the tshvatiom of merke
net corrvsmierrtfy mxhad by the main he of
Ievefs of to cormact with lidsl bench mark or
other previously aefebfished bench rrrerke in
obfainiig checks on eld IeveJing either aI the
beginning or end of a fine of Jevels or et
intarrnadale jurrctiens ebng the new bna of
IsrveJs.
spur travorae-Any short traverse that
branches cd the tiihed traverae to reach
some vantage @nt or poaificm. AJSOcefled
stub trmrarao.
stabilized mount-A mount controlled by e
gyroscope vertical reference unit designed to
maintain a rna@ng or itional camera or
other devices euch aa r PR enlenna in a near
vertical orientation
and roll,
independent of aircraft pitch
stsble bnse-A general term apgdied to
reaming materials poeseesing .9 high degree of
dimensional stebilii,
stablo grevimeter-A gravimeter having a
single weight or spring such that the aensitivify is
pvrtbnd IO the ~uere of its period.
stablo-basa fflP(JCS) A perficuter type of
film having high atabilii in regard to ahrinkege
and stretching. [Suitable for aerial rne#ng
phetogrephy and map production. Uauelly
referred to by its commercial narrw.]
Btsbla-fypa gravlmet*r—A gravimeter whwh
was a high erder of ep:iccd ardor mechanical
megnifiition ac that a charrga in Poaifiin of a
weight or associated properfy is measured
directly.
stadia circle-See Baaman arc.
atadla corrstant-(leveJing) The retie which is
rnuftiplied by tha stedii interval to cbtain Iha
Iangth et a sight in mafera. A!so, the ratio by
which the sum cd the aiadia inbrvals of all aight6
of a run ia mrwerled to the length of the rrm in
kilometers,
stedla dlagra m-A chml or drawing whwh
provides a means for rapid fieJd reduction of
etadia reedin~. Ueuslly it is prepared on croaa-