Eisco

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US$8.40
Single, open sided frame, with hooks at each end carrying three ball bearing plastic pulleys with diameters of 25, 38 and 50 mm respectively. The open side frame greatly facilitates stringing up as no 'threading' is involved.
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US$22.68
Bench clamp pulley 50 mm diameter pulley with metal ball bearing carried on a two part aluminium frame, designed primarily for clamping to the edge of a bench, table etc. With the pulley overhanging the edge and in a vertical plane. Overall length of frame (pulley bar) 110 mm. Maximum clamp opening 25 mm.
Delivery within 2-3 weeks
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US$26.25
Comprising a 50 mm diameter nylon ball bearing pulley, carried on a two part aluminium frame, designed primarily for clamping to the edge of a bench, table etc. With the pulley overhanging the edge and in a vertical plane. Overall length of frame (pulley bar) 110 mm. Maximum clamp opening 25 mm.
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US$22.40
Clamp has a 45mm plastic pulley with bracket for bench mounting up to 25mm thickness. Can be used with a force table as well. 
Delivery within 2-3 weeks
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US$41.36
This complete apparatus has a 15cm adjustable scale. The adjustable scale helps to prevent parallax error. Scale is marked in millimeters and mounted on sturdy 30cm support rod and a wooden base. A hook supporting a coiled spring with a mass hanger and indicator is attached to rod. 
Delivery within 2-3 weeks
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US$20.68
Stand with a receptacle for a ball at the top. 18 mm ball, a square piece of sheet metal and a trigger of sheet metal included. Pulling and releasing the trigger causes the square sheet to slide out from under the ball, dropping the ball in the receptacle by inertia.
Delivery within 2-3 weeks
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US$144.54
This model demonstrates the conversion of mechanical energy into electrical energy, specifically a water turbine. Turbine is fitted with a transparent cover to show inner workings with inlet and outlet tubes. This is directly connected to a dynamo to generate electricity.
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US$6.30
Magnifier Glass with handle. 50mm Diameter Glass. Focal length 5.75". Lab quality magnifiers. Chrome plated metal frame with hard black handle.
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US$13.58
This convex mirror is silver backed with a protective coating.
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US$17.95
This set is of highly polished acrylic equilateral prisms -- 25mm sides and lengths of 25, 50 and 100mm.
Delivery within 2-3 weeks
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US$9.69
3.5" Semi Circular Block - Glass, dia 90 x 16mm thickness. Clear glass, all faces are polished. Pitcure shows 2 blocks only one 3.5" semi circular glass block is represented in listing.
Delivery within 2-3 weeks
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US$40.01
Burner has a heavy casted base giving stability to the burner. Nickel plated brass burner tube with rotatable air regulator and cylindrical riffled connector mounted on casted base. Burner Tube 12.5mm , base dia 75mm overall height 120mm (4.72") For use with LPG/Butane.
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US$26.04

This neoprene hose connects your bunsen, tirrill or any other type of burner to a fuel source. Connect your burner to a fuel source. 3 feet (.9m) in length.

Delivery within 2-3 weeks
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US$2.35
Standard nylon test tube brush. Fan shaped end. Dimensions: 10 x 8 x 1 inches ; 3 ounces.
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US$27.66
The buret is made of acrylic for durability, and has a polytetrafluoroethylene (PTFE) plastic plunger stopcock for resistance to chemicals, moisture, and high temperatures. Acrylic is lightweight, and resists shattering, impact, and most non-abrasive cleaners including ammonia and strong detergents.
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