132 



CENTRAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



No. 2478. 



No. 2470. 



No. 2476. 



2468. GILLMORE NEEDLES in block, for determining both the initial and the final set of cement. 

 They consist of a pair of steel needles, one, i/j 2 inch in diameter loaded with a weight of Vi 

 pound, and the other i 4 inch in diameter loaded with a weight of one pound $6.00 



2470. GILLMORE NEEDLES, same as No. 2468, but with vertical support to keep the needles perpen- 

 dicular to the surface of the pat '. 6.00 



MOIST CHAMBER for Cement, of soapstone, furnished to order. Prices on application. 



2472. MOLDS, Cylindrical, brass, for preparing cylinders used in determining the compressive strength 



of Portland cement mortars. Diameter, 2 inches; height, 4 inches. (See Tentative Standard 

 of the American Society for Testing Materials C 9 16 T) 8.00 



2473. TAMPER, Steel, for use with No. 2472. Weight, about % pound; length, 6% inches; diameter 



at top, % inch; at bottom, 1 inch 3 50 



2476. MOLD, Cylindrical, cast iron, with detachable base plate and hinged clamps, machined to size. 



Diameter, 8 inches; depth, 16 inches 27.50. 



2478. MOLDS, Cube, of brass, with hinge clamp for preparing cubes for compression tests. 



No A B 



For cubes, inches 1 2 



Each 3.50 4.50 



2480. MOLD, Cube, of iron, hinged, for 6 inch cubes, with detachable base plate 9.00 



2482. MOLDS, Cube, of brass, same as No. 2478, but in gangs of 2 molds. 



No A B 



For cubes, inches 1 2 



Each 3.00 4.00 



2486. MOLD, Pat, for forming pats of neat cement intended for steaming tests 2.50 



2488. PAN, of galvanized iron, for immersing briquettes in water before testing. Size, 24x24x3 inches 



1.50 



2490. PLATE, of heavy glass, for use in mixing cement and filling briquette molds. Size, 24x24 inches 



4.50 



SAMPLE CANS for Cement, see Boxes No. 1828. 



2496. SAND, Standard, for cement testing, according to the American Society for Testing Materials 

 per 100 pound bag 4.00 



