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Weights/ Masses

Please select from the list below or the links on the right. 

Masses or Weights

Masses or weights are made in different shapes and sizes depending on the final application. Some masses are made for balance scales; some have one or two hooks and some others have slots so that they can be attached to a weight hanger. Click on images to view more details.

Masses with hooks

Masses with hooks are widely used in physics experiments where you need to hang a mass to a string for experiments related to forces, friction, pendulum, motion, acceleration and others. This set of masses with hooks have one visible hook on the top and one hidden/ recessed hook at the bottom.

Click here or the image for more details.

Aluminum Weight Hanger and weights

Aluminum weight hangers are made of an aluminum rod and a disk shape weight attached to it. The rod has the same diameter (usually 5-mm) all over the column and the hook. Weights for aluminum weight hanger have a wide slot and can be inserted from any place along the column.

View details: Click on images.

 Brass Weight Hangers and weights

Brass weight hangers provide a secure stack of weights with no risk of falling when the weight hanger is tilted.

The weights for brass weight hangers have a narrow slot and a center hole.

Specifications of brass weight hangers and weights.

 Brass Weight Hangers with Weights

Slotted weight hangers with weights as a complete set eliminate all confusions and guarantees matching components and best selections.

Masses in weight sets are selected to ensure you can put together every possible weight in a specific range.

Click here or the image for more details.

Weights for Balance Scales

Metal weights for balance scales are available individually or in sets.

These weights are often made of brass. They may however be plated with nickel or chromium.

All weights are clearly stamped to show their masses in grams.

Weight Sets in Box

Weights in a set includes one of 1g, 5g, 10g, 50g, 100g, 500g, 1000g and two of 2g, 20g and 200g masses. Total number of masses supplied depends on the range chosen as indicated in the online store. Plated brass weights (masses) with knob in a wooden case with a hinged lid. Calibrated according to tolerances specified by International Organization for Legal Metrology, Class M2. Fractional weights are not included. Note: we can substitute two 10g masses with one 20g mass and two 50g masses with one 100g mass according to your requirement. We can quote and accept orders for other combinations of masses when you need large quantities. Masses are also available individually.

Plastic Weights for Younger Students

Every one can use plastic weights with a balance scale, however, plastic weights are often used by younger students and for education purpose.

Click here or the image for more details on plastic weights as well as plastic balance scales.


Distributors of scientific and educational products

Where to buy?

Most pictures are linked to the pricing and online store for fast and convenient ordering

Our products are available at the following online stores. For large orders please call in advance and verify the availability, wholesale discounts and shipping options. If you cannot find any product in the online store of your choice, please use the search option of the store or call (973)777-3113 for further assistance.


  All orders will be shipped from our warehouse in United States (USA). We ship worldwide to most countries including U.S., Canada, Australia, United Kingdom, New Zealand, Germany, France, Netherlands, and many other countries.

List of metals for science experiments


Slotted Weights

Weight Hangers

Plastic Weights

Slotted Weight Set of 8

Slotted Weight Set of 12

Weight Box

Slotted Weights for Brass weight hanger

Masses with hooks
Set of 9

Set of 5 weights

Slotted Weights for Aluminum Weight Hanger

Slotted Masses for
Brass Weight Hanger


Copyright 2005 MiniScience Inc.