General Tools EP8703 Calibratable Multi Function Digital Psychrometer auspowers_batchthree non electronic technology to added comfort auspowers_batchfour non electronic technology to added comfort while allowing the hearing of clear conversations BC Precision has a full line of precision balls Chrome Steel Balls AISI 52100 chrome steel BallsGrade 25 to 100Sizes range from 1 32" to 5" in diameterSmall and large quantities availableStandard and metric sizes in stock Carbon Steel Balls AISI 1010 carbon SteelGrade 100 to 1000Sizes range from 3mm to 2 inches in diameterSmall and large quantities availableStandard and metric sizes in stock Stainless Steel Balls AISI 440 stainless steelGrade 5 to 100Sizes range from 3 64" to 3" in diameterSmall and large quantities availableStandard sizes in stock Si3N4 & ZrO2 Ceramic Balls Si3N4 & ZO2 Ceramic BallsGrade 5Sizes range from 1 16" to 3 8" in diameterSmall and large quantities availableStandard and metric sizes in stock Read more 14 Degrees to 122 Degrees Temp 1 Percent Humidity Resolution