The evening herald. [volume] (Albuquerque, New Mexico) 1914-1922, 1917-09-07
ACCURATE WAR MAPS
VERY IMPORTANT IN
PRESENT CONFLICT
High.power, Long-range Guns Are
Almost Useless Without This
Valuable Aid Inventor Gives
Ideas to Government.
Special corrsspond.nes to The psrsld.

Fnfflel itrFefpohOenee To Inc tefatn.
Washington. - c.. Sept. TN
modern warfare. with Empower.
iong-rnng" guns operating by indirect
fire upon an unseen objective. not
even the quality Of powder. the eX-
plosive power Of the projcct.le's
charfr. or the accuracy Of tho can.
non riflinR Is of more importance
than the absolute accuracy of the
MAJ maps with which tn" exact post
tions of batteries. supply depots. and
troop concentration centers are To-
Gated The redrawing and correc-
ton of errors In the existing maps
Of France and Belgium IL one Of the
most vital labors upon which the
engineers OF the American army ara
NOW engaged
For the expedition Of this work the
war department has accepted q unique
invention known ~ the Humstcnd
Map Protector. designed and perfect
ed hN \ H.. Mumstead. chief carto-
FrNphot Of the National Geographic
Society Three Of the Bumstead pro-
i%votorF. which the inventor has de-
rlined a. patent the idea being do
mated To government use. have been
delivered 20 the war department
where thcV have been fully tested
and found to he absolutely accurate
These three projectors, made of
nicElcd brass viii meet an the pres.
rnt needs of thc army typographical
starr By means Of these. parallels
and m%cridians. the bases on which
an important field maps ar" con
strurtcd. can be laid down" In TWEEN
ga "a -. ~. -.uI.... III
ud requires from three to -four hours.
IN addition 10y he use Of this device
tho possibility of error through mis-
calculation b. eliminated entirely. tho
whole process being mechanical
The projectors are corrected to one
Nyc huudrrdth of am inch. aud as tho
-,llr 10 which they are made Is one
go 90 900 ,ahout three inches 10 the
mil,I. there could not occur from tho
use ~ this protector AN error of more
Than 80 inchcs IN amy calculated dis
tHuco or direction. II q h~igh-eNplo-
siyc proioctile hits within forty inches
OF M" object at which IL H. aimed II
Is fairly safe tu assume that FOR AN
practi,tl purposes the man IL a sue
'cs, for there WOULD not be- enough
l'ff Of me objective to determine
whether u had sustained a fair hlt
u' I Wcr" shock
The map MAPPING department OF the
NIfIuuIl Geographic Suciety hua been
600 WORK Tor two months preparing
th' Nuuietcad projectors. Absolute
mathematical accuracy was required
.ud scientifically perfect graduating
tool Wor" used leo engraving tho
UrII, marking the degrees on the
nr lIJas sheets which measure -s W
hg 2"i inches and ara four-uu" hun.
dr,tutus OF au inch thick. weighing
twrl," 1nd % half pounds They are
mot designed fur rourA-3nd-tumhlc
Wlrh. h"W,,rr. ue q single don't IN
Of a., plates would destroy iuz
accuracy nut heat will not affect
'ucu ts expansion and contraction
viii hr proportional for the lem IN.
breadth % size of the incisions
The projectors just completed arc
designed Tor plotting degrees. min
ute and seconds 81 latitude lyinr
between :, and o.. degrees nos,
which include IN" territory on tho
battle fronts lu France ant Eelrium
tho Eu-~u-GcrmtU fronts from thT
Baltic 'o "a" Elgck Sen. and the Aus.
tru-lttliuu Trrntino front ~ maps
ur, required subsequently for the
Macedonian front new projectors. cat
io the different attitudes. Will hc re,
puirol