If you still need that information TonTon here it is.
Satchel strap on the Temple of Doom is 5mm. On the Raiders it is bigger around 7mm. The TOD one looks much better in my opinion.
Both bags are roughly the same. 7 cm up and down and 6.5 cm across.
Of the three stones two are the same length wise 4.5cm and one is shorter 4cm. All three have pretty much the same width 2.4.cm.
Here is also a picture of the Temple satchel next to the one you did for comparison. Hope some of that helps.
Thanks so much EcklecticBadges, huge help! Not sure I'll be able to fashion a bag from scratch but I do have some material to give it a try.