3-INDIAN MINIATURE SIGNAL CANNONS
 

These Signal Cannons were used by the Babi Rulers of Junagadh State Early 20th Century AD, Junagadh, Gujarat; India .
These miniature cannon is made from Bronze. It has its usual fire-lighting hole to fire ammunition. Such Miniature Cannons were a part of the Royal and elite homes in the State of Junagadh in 19th and 20th centuries. These still-working Tops were employed during various occasions like marriages, processions and Diwali festivals. During these occasions, the Cannons were fed with usual ammunition from front and were fired to salute a Royal Processions or mark the festivals to show ones high stature in the society. A miniature but powerful asset to possess!

How big are they?

yes
how small are they? :D
scale, length, weight...

HI JENS WILL MEASURE AND GIVE ALL DIMENSIONS SOON,THANKS

Bandook, in Japan such small cannon like objects are said to be gun powder testers (kayaku-dameshi).

thanks estcrh very interesting indeed,cheers

Measurements OF THE 3 CANNONS
 

HI SOME ROUGH MEASUREMENTS FROM TOP TO BOTTOM
SMALLEST ONE IS 6.1 INCHESX2.75 INCHES[WHERE THE 2 ARMS ARE]X1.5[CLOSER TO TOUCH HOLE]-WEIGHT IS 1 KG
MEDIUM ONE IS 9.3 INCHESX2.75X2 -WEIGHT IS 2 KGS
LARGEST ONE IS 9.75X3.3X1.8 - WEIGHT IS 2.5 KGS
REGARDS RAJESH

Nice examples, Rajesh,
I guess that, same as in the West, you had this type of devices serving a wide range of purposes; festivities, ship signals, powder testers, currency (especially when bronze) ... you name it.
Some times the purpose of each specimen is evident, other times is rather hard to distinguish them.

THANKS FERNANDO,CHEERS