SM-3767 Abacus A simple device useful for counting and among the first calculating devices ever used consists of a wooden board mounted base, over which 'U' shaped brass wires are mounted so that the arms of wires are on each side of the board. Each wire has 20 beads (10 each of two colors), whic...

SM-3758 Abacus EconomicalSix metallic rods mounted on a wooden base with 30 beads (15 each of black and white) which assists in counting and calculation. SM-3758 Abacus Economical

Accessories for Aquarium

ACCUMULATAORS BATTERY BY ESAW MANUFACTURER OF SCIENTIFIC INSTRUMENTS IN INDIA In high impact polystyrene case with handle and terminals marked positive and negative. Recommended for applications involving less frequent discharges not exceeding 0.75A. Supplied uncharged, without acid. Charging ins...

SM-3840 Pyramid ModelsA unique collection of 3-dimensional different geometrical elements made of clear acrylic. Useful for studying the volumes and surface areas of the various figures and their inter-relationship. Each element is about 10cm in height and can be filled with water or sand (not su...

SM-3804 Pyramid AcrylicA hollow pyramid, made of pieces clear acrylic sheet joined to form a pyramid on a square base. Gives an idea of the geometry, surface area, and volume of the shape.SM-3804 Pyramid, Acrylic

Adapters Distillation 105° Cat. No. Socket Size Cone Size A-95/1 14/23 14/23

Adapters, Air Leak Tube/ Gas Inlet Tube•These tubes are known for their accurate dimensions.•Ensure their quality and durability.

Adapters, Receiver Delivery, With Long stem.   Cat. No. Socket Size A-59/1 14/23 A-59/2 19/26 A-59/3 24/29 A-59/4 29/32