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|  MIL-P-48602(MU)
3.4.1 With the disk rotated 800 mils, the index lines on the disk
shall intersect the four located points on the base grid within 10 mils.
3.4.2 The deflection arm scale, when rotated to the four established
points, shall indicate 3250 meters 10 meters.
3 . 4 . 3 The deflection arm meter scale when superimposed on the base
grid meter scales shall coincide at the 3500 meter lines within 10 meters.
3.4.4 The vernier scales of the base grid and deflection arm shall
coincide within 1.0 mil.
3.5 WARPAGE
3 . 5 . 1 The maximum warp between the disk and the base of the plotting
b o a r d shall not exceed 0.03 inch as measured at the outer edge of the
disk.
3 . 5 . 2 The maximum warpage of the deflection arm of the plotting
b o a r d shall not exceed 0.03 inch, and this warpage shall not extend in
f r o m the edges by more than 3/16 inch.
3.6 Surface finish.- The top surfaces of the disk and the base
erasures as specified on pertinent drawings. The materials shall be
translucent and have no defects such as pits, digs, scratches With depth,
s t a i n s , or waves on the surface that may be mistaken for pencil marks.
The lines and figures on the base grid, as seen through the disk, shall
be clearly legible.
3 . 7 O p e r a b i l i t y . - W i t h the hole of the disk engaged with the pivot
c e n t e r and with the pin bottom of the deflection arm knob inserted in
the pivot center, the deflection arm and disk shall be capable of rotat-
i n g freely. At a standard ambient temperature of between 60 and 90F
t h e deflection arm and the disk shall be removable from the base with
normal finger pressure and without causing permanent distortion.
3.8 Plotting Board C a s e 11733754.- The case shall conform to all
requirements specified on Drawing F11733754 and drawings pertaining
thereto.
4. QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for inspection.-Unless otherwise specified in
the contract or purchase order, the supplier is responsible for the per-
formance of all inspection requirements as specified herein. Except as
otherwise specified, the supplier may utilize his own facilities or any
other facilities suitable for the performance of the inspection require-
m e n t s specified herein, unless disapproved by the Government. The Gov-
ernment reserves the right to perform any of the inspections set forth
3
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