< td> Browse Catalog [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] ... Weight mass set Precision Set - 8 pcs. - For Age 9+Yrs Weight Masses, Set - 12 pcs. Housed in a wood case and supplied with tweezers. - For Age 9+Yrs Weight Set 9 piece Hooked Brass in wood base - For Age 9+Yrs Wide Range pH Indicator Kit For reading pH from 1 to 14 - For Age 9+Yrs Wire Gauze 4" with ceramic center with ceramic center - For Age 9+Yrs Wire Gauze 4" without ceramic center without ceramic center - For Age 9+Yrs Wire Gauze 5" without ceramic center without ceramic center - For Age 9+Yrs Ball and Ring Kit - Best Quality This unit demonstrates the expansion of metal when heated and its contraction when cooled. - For Age 10+Yrs Browse Catalog [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [21] [26] [28] [29] [30] [31] [32] [33] [34] [35] [37] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] [51] [52] [53] [54] E-commerce powered by MonsterCommerce shopping cart.