High Precision Helmet Lumen Ruler
Function and Feature:
It is main use to measruement the helmet's inner's size, have high accurate
1, Outer ring made of flexible stainless steel.
2, Turn to original shape automatically after use.
3, Dail plate made of yellow brass.
4, Range: 49-62cm(adults), 42-52cm(children).
We are the largest helmet testing machine production factory in China, We treasure the value of good quality, reasonable price and efficient service with customer satisfaction. We expert ourselves in providing our customers the best suitable testing designs and high quality testing machines to make you the utmost profit.
Outer ring |
made of flexible stainless steel |
Dail plate |
made of yellow brass. |
Range |
49-62cm(adults), 42-52cm(children) |
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