Click here to make tpub.com your Home Page

Page Title: Eyepiece focus
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Pressure (counterbox area)
Up
Telescope, Panoramic: M117
Next
Five mil click lead mechanism



img
MIL-T-46313B(MU)
3.7.4 Eyepiece focus. - The eyepiece focus shall be fixed between
the limits of -0.75 and -1.0 diopter.
3.7.5 Parallax.- Parallax in the center of the field shall not exceed
0.1 mil when viewing a target at 80 meters 1.0 meter.
3.7.6 Resolution.- Resolution on the optical axis shall be 10.0
seconds of arc or less when using an auxiliary telescope of at least 3
power having an entrance pupil of at least 0.4 inch. Resolution shall
consist of detectable line structure and proper line count in all four
meridians.Variation in focus between meridians shall not exceed 0.25
diopters as measured at the telescope eyepiece.
3.7.7 Reticle.- The angle formed by the graduations at the outer
extremity of-title shall be within 0.25 mil of the value indicated
on the reticle drawing.
3.8 Performance.
3.8.1 Elevation mechanism.
3.8.1.1 Excursion range.- Rotation of the elevation knob shall cause
the line of sight to elevate and depress a minimum of 300 mils from the
position specified in 3.6(d).
3.8.1.2 Plumb travel.- With the line of sight in coincidence with a
vertical target Zinc, the line of sight shall track the target within 0.5
mil when elevated 300 mils, depressed to 300 mils, then elevated to zero
elevation.
3.8.2 Azimuth mechanism.
3.8.2.1 Azimuth error.- Error at azimuth readings, taken in 800 mil
increments through two full revolutions shall not exceed 1.0 mil excluding
backlash.
3.8.2.2 Deflection error.- Rotating the gunner's aid knob to indicate
15 mils followed by rotation of the azimuth knob in the opposite direction
(with backlash removed) to deflect the line of sight 15 mils shall cause
the reset counter to return to within 0.3 mil of the original setting.
This requirement shall be met with the 15 mil value set into each scale
and the azimuth counter indicating 3200, 4800, zero, and 1600 mils at
the start of each reading.
3.8.2.3 Backlash.- Backlash in the azimuth mechanism shall not exceed
1.0 mil when read on the azimuth counter; 1.5 mils when read on the reset
counter.
4.

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +