HANDWRITTEN NOTES

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP79B00873A000800010023-1
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: October 18, 2012
• Sequence Number: 23
• Publication Date: October 6, 1970
• Content Type: MISC

Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1
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Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1
 Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1
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Declassified in Part - Sanitized Copy Approved for Release 2012/10/18 : CIA-RDP79B00873A000800010023-1
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Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1
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Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1
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Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1
DESK MODEL T-4R
COMPARATOR
WITH MAGNIFIER AND
FOUR PAIRS OF RETICLES,
Nos. 121, 122, 123, 124,
.IN COMPACT CASE
FOR MINIATURE MEASUREMENTS
Accurate, easy to use, this comparator
can be positioned on objects of any size.
Approximately 6X magnification. Ideal
for checking small parts and dimensions.
Complete selection of 30 reticles listed
below.
INTERCHANGEABLE RETICLE
(TRANSPARENT SCALE)
No t2t='h in.
By .005 in. Div.
Eighteen sizes, .001" to
.050". Used in checking
scribed lines; slots, etc.
Compare with No. 140.
Grid, 10 X 10mm.
Used in many biological
sciences., for soil analysis.
No. 133 - Radii,
Fractional Inch
sizes.
No. 137 - Grid.
.050" x .050"
squares.
First made for checking
layouts and inspecting of
electronic wiring boards
(printed circuits).
No. 141 - Circles,
Inch sizes.
UIW No. 128 .ecept apete
d,c1e. Both fractional and
No. 151 - I.R.I.G.
16 Digital Track
Spacing
For instrumentation mag
netic tape.
{?de A_0e ^
Nr. }22 =?15. mm
By 0.1 mm Div.
This is the most useful
"co'. for scientists, labo-
ratory technicians, and
others using the metric
system.
No. 126 - Crossed
lines at 90e.
For quickly checking th
squareness of .all lay+
outs and parts.
No. 149 - Azimuth
and Bearing Circle
1.0 degree div. Preferred
over No. 123 for map
reading.
No. 134 - Center
Finder.
For checking accuracy of
centers and keyways of
small shafts, layouts, etc.
No. 138 -Index
Line.
First made for use in
Comparators which are
built into special layout
and measuring machines.
No. 142 - Widths,
metric sizes.
Like No. 125 but with bars
varying in width from 0.1
mm to 2.0 mm by 0.1 mm
Increments.
All threads from small-
est to 20 THDS/IN in
both series. See reticle
No. 132 for pitch of
new NM series.
ADDITIONAL RETICLES
LISTED BELOW
$2.00 each
No. 139 - Radii,
Decimal inch sizes.
A companion to Reticle
No. 133. This one has
decimal inch sizes while
the other has fractional
i nch aes.
No. 143 - Drill
Points.
For checking the sharpen-
Ing of small drills. Shows
correct point angle and
lip clearance for drilling
various materials.
No. 154 - I.B.M. , S7
` No. 152 - I.R.I.G.
Digital Track \ 32 Digital Track
Spacing \ Spacing
For instrumentation meg- s For instrumentation mag.
netic tape. nerd tape.
(I r- k I i7 ; r
$19.50
No- JT- Degrees.
A full circle protractor
with l.? divisions. ,A gen-
erally useful scale.
Nine holes ranging from
1/128 in, to 1/8 in. in
diameter. For checking
holes, voids, flaws, etc.
(Specify by number)
No. 150 - I.R.I.G.
Analog Track
Spacing
For instrumentation mag-
netic tape.
ias Pitch, NF and NC
?~ -?-- series.
No,_124.- s5 in.
By 64ths.
Open scale and fine lines
permit very accurate
measurements for those
preferring fractional d4
mansions.
No. 128 - Holes,
Decimal inch sizes.
Eighteen sizes fcom .001
in. to. 050 in' For checking
holes i spray nozzles,
gos jets. ball-point pens.
instruments, watches. etc.
No. 132 - Thread
Pitch, NM series.
For checking threads
the new iature"
See Wide No.
135 sfor other.
No. 136 -.300 in.
By.002 in. Div.
Similar to No. 121, but
with finer divisions for
still more accurate meos-
ents. By reading on
the lines or between them
measurements to .001"
are read directly.
No. 140 - Caliper,
Decimal inch sizes
Somewhat similar to Re-
ticle No. 125. Consider
No 125 us a feeler-gage
and this one as snao-
gage for miniature parts
and dimensions.
No. 144 - Circles,
metric sizes.
141
N
o.
Open circles like
but metric sizes from 0.1
to 2 0 m die. by 0.1 mm
Incremenh.
No. 153 - In Line
Track Spacing
For mstrumenrahon crag
net;.: tape.
Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1 ,.,..
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Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1
Declassified in Part - Sanitized Copy Approved for Release 2012/10/18: CIA-RDP79B00873A000800010023-1