SPECIFICATIONS FOR MODEL 621 (Sanitized) COMPARATOR W/MOTOR DRIVE ON BOTH 'X' & 'Y' SCREW

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002100040053-7
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 8
• Document Creation Date: December 28, 2016
• Document Release Date: December 28, 2001
• Sequence Number: 53
• Content Type: REPORT

Approved For Release 2002/06/1
DECLASS REVIEW by NIMA/DOD
Approved For Release 2002/06/17 : CIA-RDP78B04747A002100040053-7 1/17/98
 -W/Motor drive on both "XII & Y11
? - ? - i ? ? ? ? ? ? 11
- ? ? 11 11 11 ? ? ?
? ? guiding Provision for tl~e motion of
,of the operator., the motion shal.-
ided" precision screw to the nut of which the carriage
IN N
IMW
? "? - I'II' ? ? 1 ^
? 1 -? point ? plate to be 115L-. ? ~?
E- ? tl ll mm lead. ? ? ' ? - ^ . ? ? - . .
*s shall ? " readable ? 11 the ?_-. ? ? ? ?
M-Leircular "least count" dial, rotv
/! ? ? and driven 11 i1 ? ? .
integral number ? millimeters. accordance
1' ? - tl? ?/ . ?- - ? 1 e II
ale? ?)~?Si~f .u ?? ? ? - u a' ? ?
~~4e'-m-l"lii-m-e-t'er.c.'ount dial for a
?- 11 tful adjustment of the millimeter ? ? ? ?
1? exact millimeter n u' ?
Approved For Release 2002/06/17 : CIA-RDP78BO4747AO02100040053-7
STATINTL
 ~it shall permit readine of whole m
age farthest from the operator wi
qrri-age moves to operator.
dial shall have 1000 ~raduations,
? to each ?? micron) ?
iage ? 1 range ? lead,
numerals ? 010, 020 etc. at res
-? millimeter points, the nume
to operator and centrally locate
i,ecflive corresponding graduation I
? ? millimeter (1 mic
-; lines at half hundredth (5 micr
s at hundredth (10 microns) point
on line structure to be arranged
mum operator convenience in readii
mpters. Index marks for least co7
? dial shall be . ? ? ? 11.
traight line, and ? that operato:
ble on portion of dials where reai
Md crank shall be -Qrovided for act
10 . addition, motor
if.screws s= be provided, with
? - 1 . jamming of nut at ends of the
~Wydis~age when not being used b
Is left hand may be used to opera
Illimeter position
~)sponding to position
?
i. e., a graduation
linear motion of
nd shall have
ective successive
als ? appearing
with ?- to
- . ? ?
on) points shall
n) points longer,
longer yet; the
y the contractor
g decimal fractions
nt dial and for-
in same hori
looks as directly
ings are to ?-
ating rotary motion
rive for rotary
ontrol system, to
?
n to the other,
tures to prevent
un, and to auto-
operator. Motor
1imately three (3)
irable heating of
crew shall parallel
ator) so that
e hand crank.
supportedand guided in its rotation by me.11 oil
,~table. The friction bearing shall be mach;
NOMys", and shall incorporate a system of
-
rei
leving rollers, so that only the
surfaces. The bearing shall be constructek to such a degree
of perfection that on rotation a point (marked on a plate to
Approved For Release 2002/06/17 : CIA-RDP78BO4747AO02100040053-7
 571-U read-ing through 360 de-
vernier least ? ? ?.? ?- ?
seconds of' arc.
-&n Optical system shall be provided for the convenient reading
?r
exhibit rando; gr_a_d_u_a,t_i-o,n* errors exceedi.-Iig 20 seconds of arc,
and the accuracy in.? _ .. -
?
eccentricity errors do not exceed 20 seclInds of arc. ContracLC
,for rapid rotation of.turntable by operaior, and, in addition,
?
gea pinion device"or otherwise, Hand
crank arrangement for rapid turntable roiation and device for
precise
L, 'MON,
?
-
a
turbed subsequent to adjustment and durin~, ; P.1, course of mea-
oa - ?
sure
late.
3. The precision ways which support the!:turntable - carriage
assembly shall be machl-n--pt-9
9
-
.
cas
GIng bed Which Supports and holds 6 r a single-
,instrument. Tbg the veight of the entire
-o-g--cessive war-4ings and the ways
-shall be essentially parallel and straiEW sfactor
~System of
Comparator bed, shall be provided for vi I - -0 _* f- -
the ev as 0
4. Attached to the comparator bed shall be a bridge designed
for maximum rigidit and
I age, and :into which are
machined essentially straight "horizontal" 'iprecision secondary
ways. The precision SeCo_ff*1,27--r -V.T--)17-
-.1 by the principal carriage and guidi
means for adlUZ?
near-perpendicularity with the direction o-I the principal guiding
ways. The secondary wavs 4-7
Ls usie seconfat,,,Lry ways, and which
_Lshall mount an optical system for viewing Ahe photographic plate.
Approved For Release 2002/06/17 : CIA-RDP78BO4747AO02100040053-7
 5.,, The optical viewing system shall have
inclined approximately 68 degrees from the
? and shall, however, view the
"vertically" from above by means of a pent
ment. Optical system shall consist of pen
mentioned, followed by an objective system
an area ? photographic plate ?
of which, along with the optical image
? ?
be viewed by the operator by means of an e
? system shall receive careful engin
~with respect to location and ? - ? -
excellent ? overall
?- ? 1
fcussle n the reticle ? ' ? ? ? accommodate ,
? operators) either ? ? .
and shall be mounted so that there is no p
? physically contacting the reticle.
,,Of two perpendicular fine lines etched or
Vith intersection in optic axis
b-e so mounted as to permit fine ro-tq.tiov, --4 11, 1616 MERMIN EME M M PAIM M-
? ? r - - iine ? point (or a ? ? -
?" ? to the ? - ? ? motion ? the guiding ways, with
? . ? u -I ? - 1 - ? - -- .1 ?-
? - ? precision on the ? ? ? ? _ ? ? . i - ? ? -
? plate emulsion and reticle to conjugate focal point
riage after focussing. S. system ?- ? assembly
6.-1 The secondary carriage (in a manner
mechanism, and shall move either (a) freely'iby hand, or (b
nave tne same characteristics with respect -,~ =
Approved For Release 2002/06/17 : CIA-RDP78BO4747AO02100040053-7
eye .optic axis
vertical for . operator
) . ?? _ ? plate
? prism ' ? prism previously
which shall image
ticle, the latter
he plate area, shall
epiece. Design of
ering consideration
ents, to achieve
piece ?-
- ye requirements of
ocussing adjustment,
ssibility ? -
eticle shall consist
.1? ? on glass,
ely) Reticle shall
 7. 'The precision secondary screw shall beiltright handed"
?
?
ELSA
rotation of the nut, ? ,
~Pcorrector bar". The screws shall f ' marr,
free from periodic errors, and sha-
ans~of highest precision ball bearings wi,
1 ? -? ? means ? ? ?
?
.
--nuts shall be ?
r ? and shall be so accurately fitti
..-Ue respective screws as to reduce backlas
e ca-se ? principal ? second
.
values:of image points on a photograpk-R
rivi ~-Mevl Position along
sion screw shall
icipal and secondary
each case with
,eful study by the
h the medium of
? 1 be mounted by
h end play entirely
recision screw
se elected by
and adjusted to
to a minimum. In
negative or
OMNI
from point of orig in corresponding-
4-0060 "0
!7 the operator) direction5 carriage being d-
? ?? -? --4..
Ili CLLI
I IAcreasing. (Fo-r actual plate measures opera-
setting by right hand motion of secoi,
dial reading increasing in maenitude duriia
Approved For Release 2002/06/17 : CIA-RDP78BO4747AO02100040053-7
sseibly~p d-xcept the overall range for precision motion of
e-L
 The comparator as a whole shall be de
in appearance and all non-machi,ned surface
attractive a,nd durable gray lacquer finish]
r And arrangement of controls shall be such as
convenience and ease of operation.
Filters, will be provided either bet -
ween
lbJective or. between objective and eyepiece.
0-- be s-Decified at a later date,.
Illumination sources to be situated so
4ren-lu-- and opaque objects can be illuminated
11. The comparator shall have provisions foi
? 11 ? ? roll film; and shall accoml
fallowing film widths:
? 70m m ?
916t rolling and unrolling of film to be conv~'
~7-near operator, i. e., operator should not ha-~
maniDulate rollers. There is to be a min
KdAsh or coasting offilm-spool supports.
ymultanecus tape punching.
The contract will include the "Flexowri'l
Elexowriter" is manufactured by:
- i to ?-effective
hall have an
The overall design
? afford maximum
measuring 91, x 181,
odate spools for
and 5.011. Controls
niently located
to leave his seat
:--
STATI
The turntable will accommodate two plan~~
3~ach a manner that it will support 1411 x 1411
T11m. Both surfaces of the bottom plate wi 1 1
will, be two separate top plates, one;
Approved For Release 2002/06/17 : CIA-RDP78BO4747AO02100040053-7
 one for the 91, x 181" area. Provis'
'or by a mechanical lift. The top plate wilmlllll~
When film is advanced rapidly it will~
surface that will damage the emulsion.
ment for plate viewing. The exit pupil of~~
? sliding design.
16 In addition, a table and chair on rail - 1- 1
constructed for operator convenience an 1"4MWqqfflq7~= , -4
Approved For Release 2002/06/17 : CIA-RDP78BO4747AO02100040053-7