Whats this ?

[spotter]

This is on ebay item no 320203610758
anyone know what it is ?? is it just some fantasy piece made out of bits
sellers description...
BOUGHT AS A PAPERWEIGHT. CAN`NOT SEE ANY OTHER USE FOR IT.

MODELLED ON I THINK? A TORPEDO OR BOMB.

POSSIBLY MADE OF BRASS (NON MAGNETIC) AND CHROME COATED.

MADE BY DM.Co LTD LONDON, STAMPED ON MAIN BODY.

2 KNURLED GRIP AREAS.

STAMPED ON UNDERSIDE OF BASE 2/45 AND MILITARY ARROW,

APPROX 5 3/8 INCHES LONG X 0.815 INCH DIAMETER MAIN BODY, 1.230 INCHES DIAMETER VERY BOTTOM OF BASE.

 

[roller63]

I saw this too, could be a special tool/guage for something, or as you say, just something someone made up.