Maybe these could fit? Lionel Replacement Light Bulbs (4th item from the bottom), the "long clear" version. Says they are 1/8" in diameter and 12 volts.
View attachment 66943
What about LED light pipes? I know it's not movie accurate, but they would disperse the light better, just a thought.
While not as tall as the others, these are 2 mm and 12 v
Amazon.com: Dollhouse Miniature Four Bi-Pin Micro Grain of Rice Bulbs: Toys & Games
Hm, I must have missed that spec. But yeah, 7 mm is pretty good.
I don't know the Asok RF measurements but from what info I got from TF, his setup has the correct values. But it also depends on the thickness of the materials too. Here are my measurements of the rangefinder casing and perspex block:
View attachment 67226 View attachment 67227
Note that the RF casing should have a 2mm thickness.
thank you for sharing this Rafal![]()