安徽快3开奖结果

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木质因瓦水准标尺

更新时间:2016-11-07 15:04:04点击次数:976次
相关介绍

安徽快3开奖结果 木质尺身 选用优良一级红松,经分解、脱脂、时效、组合成型等现代工艺技术处理加工。 具有变形小、重量轻、适用于一、二等大地水准测量。 主要技术指标 采用标准CH8008―92因瓦合金带4J36,线膨胀系数≤1.3×10-6/℃;米间隔真长与名义长差≤±0.02mm;米间隔平均真长≤0.01mm;分米分划真长与名义长之差≤0.013mm;标尺基本与辅助常数及零点高差≤0.02mm;标尺纵轴与底平面垂直测定≤5";底平面平直度≤0.02mm;尺身矢距≤3mm;数字注记为分米和厘米,分划间隔为10mm和5mm,有正象和倒象两种。


木质尺身

    选用优良一级红松,经分解、脱脂、时效、组合成型等现代工艺技术处理加工。

    具有变形小、重量轻、适用于一、二等大地水准测量。

主要技术指标

    采用标准CH8008―92因瓦合金带4J36,线膨胀系数≤1.3×10-6/℃;米间隔真长与名义长差≤±0.02mm;米间隔平均真长≤0.01mm;分米分划真长与名义长之差≤0.013mm;标尺基本与辅助常数及零点高差≤0.02mm;标尺纵轴与底平面垂直测定≤5";底平面平直度≤0.02mm;尺身矢距≤3mm;数字注记为分米和厘米,分划间隔为10mm和5mm,有正象和倒象两种。


Wood staff body

安徽快3开奖结果   Choosing the first-grade superior quality red pine, the staff is processed with the modern arts and crafts technologies, such as decomposing, degreasing, aging, compounding, molding, etc。

  Having less distortion, lighter weight, the staff applies to the first, second grade land surveying。

The principal technical specifications

  According to CH8008―92 invar belt 4J36 standard, the coefficient of linear expansion ≤1。3×10-6/℃;the difference between real length and nominal length per meter ≤±0。02mm;the difference of the average real length between the scale space in meter ≤±0。01mm;the difference between the scale space in decimeter ≤±0。013mm;the difference between basic constant and assistant constant and the null point difference of the staff ≤±0。02mm;the angle between the vertical axis and the bottom plane ≤5"; the smooth degree of the bottom plane ≤±0。02mm;the degree of curve of the staff≤3mm;The staff has du scales, one is in 10mm increments and the other in 5mm increments, having two images, one is erect image, the other is inv

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