United Scientific Supplies

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US$22.05
Set includes two helical springs. The long, narrow spring measures 3/4" x 72", and can be extended to 5 meters. The larger spring measures 3" x 4", and can be extended many times its length without distortion. Includes activity guide.
Delivery within 2-3 weeks
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US$9.58
Hydrometers for determining the specific gravity of liquids.  Two specific gravity ranges available.  Each unit is housed in a re-usable storage tube.  We also carry hydrometer cylinders.
In stock
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US$1.46
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 5g.
Delivery within 2-3 weeks
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US$1.75
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 10g.
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US$2.91
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 10g.
Delivery within 2-3 weeks
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US$4.66
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 50g.
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US$13.58
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 200g.
Delivery within 2-3 weeks
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US$55.36
Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. 1 weight, 1000g.
Delivery within 2-3 weeks
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US$6.32
2" long, plain, chrome plated, with excellent conductivity. 
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US$23.63
Flexible, 18 swg stranded wire cord with a stackable banana plug at one end and an alligator clip at the other end. Alligator clips has a protective vinyl sheath.
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US$3.64
Flexible, 18 swg stranded wire cord with a stackable banana plug at one end and an alligator clip at the other end. Alligator clips has a protective vinyl sheath.
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US$7.97
2" long, with insulated sleeve, chrome plated, with excellent conductivity.
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US$2.73
Knife switches for low voltage experiments (less than 36V) with plastic bases. 
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US$1.27
Knife switches for low voltage experiments (less than 36V) with plastic bases. 
Delivery within 2-3 weeks
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US$13.94
Plastic Insulated Copper Wire is 22 gauge, supplied in 100 foot rolls.
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US$13.94
Plastic Insulated Copper Wire is 22 gauge, supplied in 100 foot rolls.
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