TD47-D0541出口型英标针片状规准仪是沧州献县中试试验仪器销售部根据英标（BS 812）开发生产的。
用于测定集料的伸长指数。 当骨料颗粒的长度超过其公称尺寸的1.8倍时，即被视为拉长。木质底座、黄铜板和钢针。为评估骨料颗粒的片状性和厚度，可使用适当的筛子代码47-d0415 / x 和厚度规代码47-d0540。 标准: bs 812:105.1
Used for determining the elongation index of aggregates. Aggregates particles are considered elongated when their length is more than 1.8 of their nominal size.Wooden base, brass plate and steel pins.To evaluete the flakiness and the thickness of the aggregates particles, suitable sieves codes 47-D0415/x and Thickness gauge code 47-D0540 can be used. Standard:BS 812:105.1
