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                    1. 1級試驗平臺
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                            1級試驗平臺是用天然的石質材料制成的精密基準測量工具，對儀器儀表、精密工具、機械制件的檢驗，是理想的基準面，1級試驗平臺特別是用于高精度的測量方面。
                        
                      
                    
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                    3. 1級平臺
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                    4. 
                        
                      
                            1級平臺是為生產車間或計量部門做精密測量用的基準平面，用于工件檢測或劃線的平面基準量具。1級平臺按JB/T7974-1999標準制造，符合GB/T 24721-2009要求
                        
                      
                    
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