Сover for throwing circle

The cover for throwing circle is made of metal frame and the top
is covered with aluminum alloy plate, the bottom is provided
with an adjusting horizontal footing and mounted with moving
casters.
The octagonal cover is composed of two parts and it can cover
a range of 2.5m in diameter. The four sides are fitted with
handles, when the two parts are assembled, there are folding
plates at the joints to prevent the throwing circle venue from
getting wet with rain.