Water quality test kit for Total Hardness, including calcium and magnesium hardness measured as CaCO3 (ppm). Each kit is capable of measuring 75-100 tests. Comes with 4 dropper bottles of reagents, a 15 mL graduated test tube, and user instructions for the kit.
STAKF 98-8 Starrett 8-Inch Precision Machinists Level The Starrett 98-8 precision machinists level is an 8" long spirit level with a graduated main vial that has a sensitivity of 0.42 mm/m or 80 to 90 seconds for determining horizontal plane and a cross-test vial that enables simultaneous leveling in two directions. The main vial is adjustable to a positive setting for accurate results, is made of ground glass that resists scratching
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