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



133 



No. 2500. 



No. 2512. 



No. 2498. 



2498. SOUNDNESS TEST APPARATUS, Le Chatelier, for indicating the soundness of cement by its 



expansion after being boiled $3.50 



2500. SPECIFIC GRAVITY APPARATUS, Jackson's, for the accurate determination of the specific 

 gravity of cement. Consists of a special burette calibrated to give specific gravity readings 

 directly, and a special flask with ground in funnel. (See Journal of the Society of Chemical 



Industry, Vol. XXIII, Xo. 11, for June 15, 1904) 7.00 



SPECIFIC GRAVITY BOTTLES for Cement, see Bottles, Specific Gravity. 



2502. STEAMING APPARATUS, of polished copper, tinned on inside, for boiling and steaming cement 

 specimens for determining soundness. Size, 15x15x30 inches. Mounted on sheet iron support, 



with shelf of wire screen and gas burner 37.50 



1614G. CONSTANT LEVEL BOTTLE for use with No. 2502. Capacity, 2 gallons 3.00 



2504. TAMPER for uniformly packing cement in briquette molds 12.00 



2506. TESTING MACHINE, Olsen New Automatic, for tension tests, the latest type of automatic shot 

 cement tester. The shot is used to counterbalance the heavy weight, and when it is removed 

 the tension produced is applied to the briquette. The shot is caught in a container on a bal- 

 ance which indicates on a special graduated dial the force applied up to the time of rupture, 

 when the flow of shot is automatically shut off. The action and weighing of shot is absolutely 

 automatic, requiring no reweighing to determine the load applied. Size: 24 inches long, 10 

 inches wide, and 30 inches high. Weight, 150 pounds; capaeitv, 1000 pounds. 



P. O. B. Philadelphia 200.00 



Note: This machine is furnished to order only and we cannot promise immediate delivery. 



2508. TESTING MACHINE, Olsen Improved Automatic, for tension tests. Same as No. 2506," but pro- 



vided with a crank in the base for applying a steady tension to the briquette in order to hold 

 the beam in equilibrium throughout the test. Size: 40 inches long, 11 inches wide and 36 



inches high. Weight, 170 pounds; capacity, 2000 pounds F. O. B. Philadelphia 350.00 



Note: This machine is furnished to order only and we cannot promise immediate delivery. 



2509. LEAD SHOT for use with Xos. 2506 and 2508 per25 pound bag 5.00 



2512. TROWELS for mixing cement. 



Length of blade, inches 3 4 



Each 50 .60 



2514. VIC AT NEEDLE APPARATUS, Bramwell Improved Form, for determining the normal consist- 



ency and setting time of cement according to the methods recommended by the American 

 Society for Testing Materials. The needles are on opposite ends of the 300 gram plunger rod, 

 the change being made by reversing the rod. Diameter of large needle, 1 cm; diameter of 

 small removable needle, 1 mm 20.00 



2515. RUBBER MOLD onlv for No. 2514 3.00 



