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,

LB

propbeanie · 06-23-23, 03:40 PM

Are you referring to the milirads thingies??

KaleunMarco · 06-23-23, 06:45 PM

Quote:

Originally Posted by propbeanie

Are you referring to the milirads thingies??

don't get technical, PB.

propbeanie · 06-23-23, 06:55 PM

Ok... "those little green line thingies on the periscope lense?"...

Does that suffice?? lol

KaleunMarco · 06-23-23, 07:05 PM

Quote:

Originally Posted by propbeanie

Ok... "those little green line thingies on the periscope lense?"...

Does that suffice?? lol

no.....no..... little-green-line-thingies is still too technical.

p.s. i forgot how to post a video link. (where is my medicine?)

Larrywb57 · 06-25-23, 12:52 PM

LMAO

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

Quote:

Originally Posted by Larrywb57

OK, no more math today, my head's spinning as I've had too many.

too many what? maths?

Larrywb57 · 06-25-23, 07:18 PM

Quote:

Originally Posted by KaleunMarco

too many what? maths?

yea, one could say that.

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

Quote:

Originally Posted by derstosstrupp

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.

06-23-23, 02:40 PM	#1
Larrywb57 Ensign Join Date: Dec 2009 Location: NC Posts: 228 Downloads: 389 Uploads: 0	Math Formula for range Ahoy Captains, Does anyone know the formula to calculate range when viewing though either periscope or though the TBT? Thanks for your help, LB __________________ Win 10 64-bit│AMD Ryzen 3 1200 Quad-Core Processor 16.0GB Ram│ NVIDO GeForce GTX 650

06-23-23, 03:40 PM	#2
propbeanie CTD - it's not just a job Join Date: May 2016 Location: One hour from Music City USA! Posts: 10,098 Downloads: 451 Uploads: 2	Are you referring to the milirads thingies?? __________________ "...and bollocks to the naysayers" - Jimbuna

06-23-23, 06:55 PM	#4
propbeanie CTD - it's not just a job Join Date: May 2016 Location: One hour from Music City USA! Posts: 10,098 Downloads: 451 Uploads: 2	Ok... "those little green line thingies on the periscope lense?"... Does that suffice?? lol __________________ "...and bollocks to the naysayers" - Jimbuna

06-25-23, 12:52 PM	#6
Larrywb57 Ensign Join Date: Dec 2009 Location: NC Posts: 228 Downloads: 389 Uploads: 0	LMAO 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. __________________ Win 10 64-bit│AMD Ryzen 3 1200 Quad-Core Processor 16.0GB Ram│ NVIDO GeForce GTX 650

06-25-23, 02:58 PM	#7
Larrywb57 Ensign Join Date: Dec 2009 Location: NC Posts: 228 Downloads: 389 Uploads: 0	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. __________________ Win 10 64-bit│AMD Ryzen 3 1200 Quad-Core Processor 16.0GB Ram│ NVIDO GeForce GTX 650

07-05-23, 07:14 PM	#10
derstosstrupp Grey Wolf Join Date: Aug 2008 Posts: 913 Downloads: 490 Uploads: 0	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) __________________ Ask me anything about the Type VII or IX! One-Stop Targeting Shop: https://drive.google.com/drive/folde...WwBt-1vjW28JbO My YT Channel: https://www.youtube.com/channel/UCIJ...9FXbD3S2kgwdPQ