The large lid and bottom grip lugs, large screw threads w/rubber seal tells the contents either had to be removed or installed 'when in a hurry' or during little or no light to open/close it to hand vapor/water tight. It's hard to tell the size of this container being the carpet isn't shag. Ballaette, next time you give a test like this, pls place a cup, pin or a 30-06 round next to it so we may get a better idea of its scale. 64mm film reel gun cam storage container as CoastalOutfitters suggested comes the closest to what it is if it's war era surplus. Ordnance fuze would be too long for the diameter given.