Gauge blacks, Standard inch system. Parallelism: 0.000005", Maximum tolerance: for size within 1" +0.000008/-0.000004; for size 2" +0.000016/-0.000008; for size 3" +0.000020/-0.000010; for size 4" +0.000024/-0.000012.
item title:HACH Ultra MET ONE 4500 4503 0.3?m 2CH Remote Airborne Air Particle Counter W/O Accessories Note: used item We Uable to do test ,unknow it working or broken . I feel shell look 60% new only,Because uable to do test, so we sale as No Working For Get Parts only. if you
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