View Full Version : Math Formula for range
Larrywb57
06-23-23, 02:40 PM
Ahoy Captains,
Does anyone know the formula to calculate range when viewing though either periscope or though the TBT?
Thanks for your help,
:Kaleun_Cheers:
LB
propbeanie
06-23-23, 03:40 PM
Are you referring to the milirads thingies??
KaleunMarco
06-23-23, 06:45 PM
Are you referring to the milirads thingies??
don't get technical, PB.
propbeanie
06-23-23, 06:55 PM
:har: Ok... "those little green line thingies on the periscope lense?"...
Does that suffice?? lol :yeah:
KaleunMarco
06-23-23, 07:05 PM
:har: Ok... "those little green line thingies on the periscope lense?"...
Does that suffice?? lol :yeah:
no.....no..... little-green-line-thingies is still too technical.:har:
https://getyarn.io/yarn-clip/08b06cb5-4ae4-4909-92c0-88507b318269
p.s. i forgot how to post a video link. (where is my medicine?):wah::har:
Larrywb57
06-25-23, 12:52 PM
LMAO
:har:
Yea, those little green and black thingies in periscope! Watch a video on youtube by SH3 Manual ranging by Bstanko6. Couldn't understand what he said it was and it was in meters. He said was in the manual. I looked in the SH4 manual that came my disk. And I couldn't make heads or tails on the print, even after using a magnifying glass. I thought someone might use another way to estimate range in yards.
Larrywb57
06-25-23, 02:58 PM
OK
Watched and read the notes below the video. The formula is: Mast height/tickX marks( green thingies) X 0.22(if using 6x power scope and .4 for a 12x)=Range, (in meters). Meters can be covert into meters multiplied by 3.28. What is the magnifying power of periscope and TBT in FotRSU v.1.8?
OK, no more math today, my head's spinning as I've had too many.
KaleunMarco
06-25-23, 04:44 PM
OK, no more math today, my head's spinning as I've had too many.
too many what? maths?
:har:
Larrywb57
06-25-23, 07:18 PM
too many what? maths?
:har:
:har: yea, one could say that.
:haha:
derstosstrupp
07-05-23, 07:14 PM
Unless a mod has changed it, for the scopes, the small marks are 1°, the large ones 4°.
So, at low magnification:
Range in yards = mast height in feet / 3 / tan (# of small marks)
At high magnification, multiply the answer by 4.
For the TBT, the small marks are 0.2°, so:
Range in yards = mast height in feet / 3 / tan (# of small marks * 0.2)
Larrywb57
07-06-23, 12:36 PM
Unless a mod has changed it, for the scopes, the small marks are 1°, the large ones 4°.
So, at low magnification:
Range in yards = mast height in feet / 3 / tan (# of small marks)
At high magnification, multiply the answer by 4.
For the TBT, the small marks are 0.2°, so:
Range in yards = mast height in feet / 3 / tan (# of small marks * 0.2)
Thank you derstosstrupp, I will try these next time I'm in the game.
:Kaleun_Cheers:
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