【Marble measuring platform base】 Traditional marble measuring platform, the use of natural stone made of precision benchmark measuring tools 【Marble measuring platform base sezi】Column height: 203 mm / 8 inches; Basic dimensions (L x W x H) : approx.150x 100 x 50 mm (5.9 x 3.9 x 1.9 in); Weighs 7.6 LBS / 3.4 kg;The dial diameter of hole is 8mm(0.314 in). 【Material】Pure natural stone, taken from the good quality underground rock layer hand-polished, will not be affected by temperature, humidity,dust, corrosive gas and other changes 【Ideal Plane】In the field of inspection of instruments, precision tools and mechanical components, it is critical to have a device or platform that provides an ideal reference plane. The reference plane needs to be highly flat and stable, and its flatness should be controlled within very tight tolerances. 【Versatile】The marble measuring base is compatible with most dial/digital indicators and other market indicators. Pure natural stone, taken from the good quality underground rock layer hand-polished, will not be affected by temperature, humidity,dust, corrosive gas and other changes