With top handle, with ridge bracket on the back, for concrete pouring Length (mm): 450 Width (mm): 600 Thickness (mm): 23 Displayed content: Construction name Date of pouring year, month, day, att ant, concrete pouring location, actual measurements at the time of collection, slump cm, air amount, %, concrete humidity, ℃,外部空气湿度,℃,流量值,CM X cm,氯化物量,kg/m3注意:安装程序 放置表面颜色:黑色 安装规格:直立类型