Historical information

Hose nozzle size can affect the stream of water. A smaller hole puts out a longer stream but with less volume.
A longer water stream is useful when trying to extinguish fire or sparks high in the tree tops.
They were often used with high pressure pumps like the Pacific Marine.

Physical description

Aluminum fire hose nozzle(s) with Y joint and interchangeable brass attachments
For 1.5 inch hose with screw attachments rather than modern twist-camm locks.
The main nozzle is aluminum alloy and the interchangeable nozzles are made of brass.