Mass & Weights

In common usage, the mass of a body is often referred to as its weight, although they are actually different concepts and quantities. In a scientific context, mass is the amount of "matter" in an object (although "matter" is hard to define), while weight is the force that gravity exerts on an object. In other words, an object of mass 1.0 kg on the surface of the Earth would weigh about 9.81 newtons, or its mass multiplied by the strength of the gravitational field. On Mars, where gravity is weaker, an object weighs less; And its weight increases on Saturn, where gravity is stronger, and space is very small and far from the source of gravity; But it still has the same mass.
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density-cubes-aluminum-20mm-x-20mm
CSAL20X20
Lightweight aluminum cubes for density experiments and comparisons.
options
From $3.59 /Unit
specific-gravity-block-with-hook
3520
32 mm metal cube with brass hook for density experiments.
options
See pricing options
precision-offset-weight-15g-for-small-vibrating-motors
SMPW
Engineered offset weight for stable, efficient vibration in small motors, 7.9mm Outer Diameter, 5mm Height, 1.8mm Shaft Diameter
options
From $0.45 /Unit
masses-with-hooks-set-of-9
MASSET9H
Nine weights with hooks, ideal for laboratory and physics experiments.
options
From $49 /Unit
slotted-weight-200-grams
SWA200G
Weight with adjustable slots for precise measurements.
From $12.95 /Unit
weight-mass-amp-density-metal-blocks-blocks-set-of-4
P61010
Metal blocks for measuring and comparing density.
options
From $14 /Unit
primary-balance-scale
PBS1
Teaches mass and weight to young children.
options
From $7.50 /Unit
calibrated-student-masses-weight-for-laboratory-use
CWSG
Reliable student masses (Weight) for educational laboratory experiments.
options
From $10 /Unit
slotted-weight-set-with-hanger
G2500
Physics weight set for Hooke's Law and balance demonstrations.
options
From $14 /Unit
weight-hanger-for-slotted-weights-50gr-brass
WH50B
50g weight hanger for slotted weights, Brass.
options
From $6 /Unit
weight-mass-amp-density-cubes-set-of-5-non-metal-20mm-cubes
DCSNM205
Compare non-metal material density and properties.
options
From $15 /Unit
weight-mass-amp-density-cubes-set-of-12-metal-cubes-10mm
DCSM106
Metal cubes for comparing density and physical properties.
options
From $18 /Unit
weight-mass-amp-density-cubes-set-of-12-metal-and-non-metal-cubes
DCS12
Set of 12 metal and non-metal cubes for learning about density and
options
From $33.20 /Unit
educational-balance-scale-with-plastic-weights
BALSCALEP
Educational balance scale with plastic weights for young scientists.
options
From $35 /Unit
weight-mass-amp-density-cubes-metals-iron
3510A-IRON
Accurate iron cubes for density experiments in classroom/laboratory.
options
From $0.22 /mm
weight-mass-amp-density-cubes-metals-zinc
3510A-ZINC
High-quality zinc cubes for density experiments.
options
From $0.26 /mm
weight-mass-amp-density-cubes-metals-tin
3510A-LEAD
High-density lead cubes for experimentation, 10mm or 20mm.
options
From $0.26 /mm
weight-mass-amp-density-cubes-metals-aluminum
3510A-ALUM
Aluminum cubes for density comparison and experimentation.
options
From $0.18 /mm
weight-mass-amp-density-cubes-metals-copper
3510A-COPP
High-density copper cubes for comparison and experimentation.
options
From $0.30 /mm
weight-mass-amp-density-cubes-metals-brass
3510A-BRAS
Precision brass cubes for density comparison and experimentation.
options
From $0.26 /mm
weight-boxes-general-purpose
3416B
Might include one of 1g, 5g, 10g, 50g, 100g, 500g, 1000g and two of 2g, 20g and 200g masses.
options
From $42 /Range:
weight-mass-amp-density-cubes-metals-tin
3510A-TIN
density Tin cubes for experimentation, 10mm or 20mm.
options
From $0.46 /mm
slotted-weights-set-of-12-for-aluminum-hangers
WHST12
12-piece weight set for aluminum hangers with stand.
options
From $20 /Unit
weight-hanger-for-slotted-weights-50gr-aluminum
WH50A
50g weight hanger for slotted weights, aluminum.
options
From $6 /Unit
slotted-weights-set-of-8
WHST08
8 brass weights with stand.
options
From $59 /Unit
slotted-mass-slotted-weight-5-gram-made-of-aluminum-for-brass-hanger
SWB5GA
Aluminum weight for brass hanger, 5 grams.
options
From $0.99 /Unit
slotted-masses-50-grams-spare
SWB50G
Weight measurement tool with removable parts.
options
From $6.50 /Unit
slotted-masses-1-gram-spare
SWB1G
Precision weight set for scientific measurements.
options
From $1.10 /Unit
slotted-masses-2-grams-spare
SWB2G
Precise weight adjustment for scientific experiments.
options
From $1.60 /Unit
slotted-masses-20-grams-spare
SWB20G
Precision weight adjustment for scientific experiments.
options
From $4.55 /Unit
slotted-masses-200-grams-spare
SWB200G
200g weight set with slotted design for easy manipulation.
options
From $3.50 /Unit
slotted-masses-100-grams-spare
SWB100G
Precision weight adjustment for scientific experiments.
options
From $8.75 /Unit
slotted-masses-5-grams-spare
SWB5G
Precision weight measurement for scientific experiments.
options
From $1.90 /Unit
slotted-masses-10-grams-spare
SWB10G
Precision weight measurement for scientific experiments.
options
From $2.20 /Unit
slotted-mass-tall-500-grams
SWA500G_Tall
500g weight with slots for precise measurements.
options
From $32 /Unit
slotted-mass-slotted-weight-5-grams-for-aluminum-hangers
SWA5G
5 gram weight for aluminum hangers with 5mm slot.
options
From $1.90 /Unit
slotted-mass-short-500-grams
SWA500G_Short
500g weight with slots for precision measurement.
options
From $35 /Unit
slotted-mass-slotted-weight-50-grams-for-aluminium-hanger
SWA50G
50g weight for slotted aluminium hanger.
options
From $4.40 /Unit
slotted-weights-2-grams
SWA2G
Precision weight for accurate measurements.
options
From $1.60 /Unit
slotted-weights-1-gram 5 out of 5 Stars!
SWA1G
Precision weight measurement for scientific and industrial applications.
options
From $1.30 /Unit
slotted-mass-slotted-weight-20-grams-for-aluminum-hanger
SWA20G
20g weight for aluminum hanger with slots.
options
From $3.50 /Unit
slotted-weights-10-grams
SWA10G
Precision Measurement Tool for Lab or Industrial Use.
options
From $2.20 /Unit
slotted-mass-slotted-weight-100-grams-for-aluminium-hanger
SWA100G
Aluminium hanger weight, 100g slotted.
options
From $8.75 /Unit
three-beam-balance-scale-laboratory-scale 5 out of 5 Stars!
MB2610
Accurate weighing for laboratory use.
options
From $85 /Unit
lever-balance-scale-dual-range
DUALB
Dual scale lever balance for precise weighing.
options
From $32 /Unit
weight-mass-amp-density-cylinder-set-equal-mass-density-set
DCS3523
Equal mass density cylinder set for physics education.
options
From $34 /Unit
weight-mass-amp-density-cubes-set-of-6-metal-cubes-20mm
DCSM206
Set of 6 metal cubes for comparing physical properties.
options
From $30 /Unit
weighing-bottles-25-mm-x-40-mm
H7413-25MM
Clear glass jars for precise measurements.
options
From $3.60 /Unit
weighing-bottles-30-mm-x-50-mm
H7413-30MM
Clear glass jars for precise measurements.
options
From $3.90 /Unit
metal-cylinder-set-6-pieces-10-x-40-mm
METCYLSET6_40
Metal cylinders for science enthusiasts and experiments.
options
From $17.50 /Unit
density-cubes-aluminum-20mm-x-20mm
Density Cubes, Aluminum 20mm x 20mm
Lightweight aluminum cubes for density experiments and comparisons.
Add to Cart
$4.99 - $359
SKU: CSAL20X20
specific-gravity-block-with-hook
Specific Gravity Block With Hook
32 mm metal cube with brass hook for density experiments.
Add to Cart
See pricing options
SKU: 3520
precision-offset-weight-15g-for-small-vibrating-motors
Precision Offset Weight – 1.5g for Small Vibrating Motors
Engineered offset weight for stable, efficient vibration in small motors, 7.9mm Outer Diameter, 5mm Height, 1.8mm Shaft Diameter
Add to Cart
$5 - $45
SKU: SMPW
masses-with-hooks-set-of-9
Masses With Hooks, Set Of 9
Nine weights with hooks, ideal for laboratory and physics experiments.
Add to Cart
$49
SKU: MASSET9H
slotted-weight-200-grams
Slotted Weight, 200 Grams
Weight with adjustable slots for precise measurements.
Ask for availability  
$12.95
SKU: SWA200G
weight-mass-amp-density-metal-blocks-blocks-set-of-4
Metal Blocks (Density Blocks Set Of 4)
Metal blocks for measuring and comparing density.
Add to Cart
$16 - $140
SKU: P61010
primary-balance-scale
Primary Balance Scale
Teaches mass and weight to young children.
Add to Cart
$10 - $75
SKU: PBS1
calibrated-student-masses-weight-for-laboratory-use
Calibrated Student Masses (Weight) for Laboratory Use
Reliable student masses (Weight) for educational laboratory experiments.
Add to Cart
$10
SKU: CWSG
slotted-weight-set-with-hanger
Slotted Weight Set with Hanger
Physics weight set for Hooke's Law and balance demonstrations.
Add to Cart
$16 - $140
SKU: G2500
weight-hanger-for-slotted-weights-50gr-brass
Weight Hanger (For Slotted Weights) 50Gr, Brass
50g weight hanger for slotted weights, Brass.
Add to Cart
$7.50 - $60
SKU: WH50B
weight-mass-amp-density-cubes-set-of-5-non-metal-20mm-cubes
Weight Mass & Density Cubes, Set Of 5 Non-Metal 20mm Cubes
Compare non-metal material density and properties.
Add to Cart
$15
SKU: DCSNM205
weight-mass-amp-density-cubes-set-of-12-metal-cubes-10mm
Weight Mass & Density Cubes, Set Of 12 Metal Cubes 10mm
Metal cubes for comparing density and physical properties.
Add to Cart
$18
SKU: DCSM106
weight-mass-amp-density-cubes-set-of-12-metal-and-non-metal-cubes
Weight Mass & Density Cubes, Set Of 12 Metal And Non-Metal Cubes
Set of 12 metal and non-metal cubes for learning about density and
Add to Cart
$41 - $3320
SKU: DCS12
educational-balance-scale-with-plastic-weights
Educational Balance Scale (With Plastic Weights)
Educational balance scale with plastic weights for young scientists.
Add to Cart
$35
SKU: BALSCALEP
weight-mass-amp-density-cubes-metals-iron
Density Cubes, Metals Iron
Accurate iron cubes for density experiments in classroom/laboratory.
Add to Cart
$2.20 - $7.84
SKU: 3510A-IRON
weight-mass-amp-density-cubes-metals-zinc
Density Cubes, Metals Zinc
High-quality zinc cubes for density experiments.
Add to Cart
$2.60 - $8.55
SKU: 3510A-ZINC
weight-mass-amp-density-cubes-metals-tin
Weight Mass & Density Cubes, Metals Lead
High-density lead cubes for experimentation, 10mm or 20mm.
Add to Cart
$2.60 - $9.27
SKU: 3510A-LEAD
weight-mass-amp-density-cubes-metals-aluminum
Weight Mass & Density Cubes, Metals Aluminum
Aluminum cubes for density comparison and experimentation.
Add to Cart
$1.75 - $4.99
SKU: 3510A-ALUM
weight-mass-amp-density-cubes-metals-copper
Density Cubes, Metals Copper
High-density copper cubes for comparison and experimentation.
Add to Cart
$2.95 - $11.26
SKU: 3510A-COPP
weight-mass-amp-density-cubes-metals-brass
Weight Mass & Density Cubes, Metals Brass
Precision brass cubes for density comparison and experimentation.
Add to Cart
$2.60 - $9.70
SKU: 3510A-BRAS
weight-boxes-general-purpose
WEIGHT BOXES, GENERAL PURPOSE
Might include one of 1g, 5g, 10g, 50g, 100g, 500g, 1000g and two of 2g, 20g and 200g masses.
Add to Cart
$42 - $200
SKU: 3416B
weight-mass-amp-density-cubes-metals-tin
Density Cubes, Metals Tin
density Tin cubes for experimentation, 10mm or 20mm.
Add to Cart
$9.27
SKU: 3510A-TIN
slotted-weights-set-of-12-for-aluminum-hangers
Slotted Weights Set Of 12 For Aluminum Hangers
12-piece weight set for aluminum hangers with stand.
Add to Cart
$20
SKU: WHST12
weight-hanger-for-slotted-weights-50gr-aluminum
Weight Hanger (For Slotted Weights) 50Gr Aluminum
50g weight hanger for slotted weights, aluminum.
Add to Cart
$7.50 - $60
SKU: WH50A
slotted-weights-set-of-8
Slotted Weights Set Of 8
8 brass weights with stand.
Add to Cart
$59
SKU: WHST08
slotted-mass-slotted-weight-5-gram-made-of-aluminum-for-brass-hanger
Slotted Mass, Slotted Weight, 5-Gram, Made Of Aluminum, For Brass Hanger
Aluminum weight for brass hanger, 5 grams.
Add to Cart
$0.99
SKU: SWB5GA
slotted-masses-50-grams-spare
Slotted Masses, 50 Grams, Spare
Weight measurement tool with removable parts.
Add to Cart
$6.50
SKU: SWB50G
slotted-masses-1-gram-spare
Slotted Masses, 1 Gram, Spare
Precision weight set for scientific measurements.
Add to Cart
$1.30 - $11
SKU: SWB1G
slotted-masses-2-grams-spare
Slotted Masses, 2 Grams, Spare
Precise weight adjustment for scientific experiments.
Add to Cart
$1.60
SKU: SWB2G
slotted-masses-20-grams-spare
Slotted Masses, 20 Grams, Spare
Precision weight adjustment for scientific experiments.
Add to Cart
$4.55
SKU: SWB20G
slotted-masses-200-grams-spare
Slotted Masses, 200 Grams, Spare
200g weight set with slotted design for easy manipulation.
Add to Cart
$3.50
SKU: SWB200G
slotted-masses-100-grams-spare
Slotted Masses, 100 Grams, Spare
Precision weight adjustment for scientific experiments.
Add to Cart
$8.75
SKU: SWB100G
slotted-masses-5-grams-spare
Slotted Masses, 5 Grams, Spare
Precision weight measurement for scientific experiments.
Add to Cart
$1.90
SKU: SWB5G
slotted-masses-10-grams-spare
Slotted Masses, 10 Grams, Spare
Precision weight measurement for scientific experiments.
Add to Cart
$2.20
SKU: SWB10G
slotted-mass-tall-500-grams
Slotted Mass, Tall 500 Grams,
500g weight with slots for precise measurements.
Add to Cart
$32
SKU: SWA500G_Tall
slotted-mass-slotted-weight-5-grams-for-aluminum-hangers
Slotted Mass, Slotted Weight, 5 Grams, For Aluminum Hangers
5 gram weight for aluminum hangers with 5mm slot.
Add to Cart
$1.90
SKU: SWA5G
slotted-mass-short-500-grams
Slotted Mass Short 500 Grams
500g weight with slots for precision measurement.
Add to Cart
$35
SKU: SWA500G_Short
slotted-mass-slotted-weight-50-grams-for-aluminium-hanger
Slotted Mass, Slotted Weight, 50 Grams, For Aluminium Hanger
50g weight for slotted aluminium hanger.
Add to Cart
$6.50 - $440
SKU: SWA50G
slotted-weights-2-grams
Slotted Weights, 2 Grams
Precision weight for accurate measurements.
Add to Cart
$1.60
SKU: SWA2G
slotted-weights-1-gram
Slotted Weights, 1 Gram
Precision weight measurement for scientific and industrial applications.
5 out of 5 Stars!
Add to Cart
$1.30
SKU: SWA1G
slotted-mass-slotted-weight-20-grams-for-aluminum-hanger
Slotted Mass, Slotted Weight, 20 Grams, For Aluminum Hanger
20g weight for aluminum hanger with slots.
Add to Cart
$3.50
SKU: SWA20G
slotted-weights-10-grams
Slotted Weights, 10 Grams
Precision Measurement Tool for Lab or Industrial Use.
Add to Cart
$2.20
SKU: SWA10G
slotted-mass-slotted-weight-100-grams-for-aluminium-hanger
Slotted Mass, Slotted Weight, 100 Grams, For Aluminium Hanger
Aluminium hanger weight, 100g slotted.
Add to Cart
$8.75
SKU: SWA100G
three-beam-balance-scale-laboratory-scale
Three Beam Balance Scale, Laboratory Scale
Accurate weighing for laboratory use.
5 out of 5 Stars!
Add to Cart
$85
SKU: MB2610
lever-balance-scale-dual-range
Lever Balance Scale, Dual Range
Dual scale lever balance for precise weighing.
Add to Cart
$32
SKU: DUALB
weight-mass-amp-density-cylinder-set-equal-mass-density-set
Density Cylinder Set (Equal Mass Density Set)
Equal mass density cylinder set for physics education.
Add to Cart
$34
SKU: DCS3523
weight-mass-amp-density-cubes-set-of-6-metal-cubes-20mm
Weight Mass & Density Cubes, Set Of 6 Metal Cubes 20Mm
Set of 6 metal cubes for comparing physical properties.
Add to Cart
$30
SKU: DCSM206
weighing-bottles-25-mm-x-40-mm
Weighing Bottles 25 mm x 40 mm
Clear glass jars for precise measurements.
Add to Cart
$3.60
SKU: H7413-25MM
weighing-bottles-30-mm-x-50-mm
Weighing Bottles 30 mm x 50 mm
Clear glass jars for precise measurements.
Add to Cart
$3.90
SKU: H7413-30MM
metal-cylinder-set-6-pieces-10-x-40-mm
Metal Cylinder Set (6 Pieces) 10 X 40 Mm
Metal cylinders for science enthusiasts and experiments.
Add to Cart
$17.50
SKU: METCYLSET6_40
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