Anatomical Models
DC Motors
Light (Optics)
Lab Supplies
pH meters
pH Papers
Weights/ Masses

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

Electrical Switches

Electrical switches for educational projects are available in many different styles. The "knife switch" is the simplest form of switch that easily demonstrates the functioning of a switch. Old sci-fi movies ("Frankenstein (1931)" or "Young Frankenstein (1974)" , for example), made extensive use of these switches in the laboratory scenes.

Please select the type of switch you may use for your project and then click on the image for more details:

Vintage Knife Switches

Vintage knife switches have a small base usually made of Bakelite or hard plastic with the brass "pole(s)" and slots "throw(s)" mounted on the base using screws. Wire connection is usually made by wrapping the bare end of the wire to a screw and tightening it with a flat or Phillips screw driver.

Vintage SPST knife switch, Click to see more

Vintage knife switches are generally used by hobbyists and higher grade students who can use tools such as screw drivers. These switches are usually rated for up to 18 volts and up to 15 Watts.

 See more...

Student Grade Knife Switches

Low cost student grade knife switches have larger base usually made of hard plastic and have contact screws with plastic knob. You will not need a screw driver to make connections to these switches. Designed for desktop quick experiments, not permanent installations.

Rated 18 Volts, 18 Watts

In case you need to mount them on a wood or cardboard surface, you may use hot melt glue or other compatible glues to do that.

See more fluorescent green switches.
Deluxe Knife Switches

Best educational knife switches are built to last from project to project and from year to year. Materials are sturdy and usually do not need any inspection or alignment before use.  The larger base is usually made of hard plastic and have contact screws with plastic knob.

Delux SPST Knife Switches, Click to see more.
Rated 18 Volts, 25 Watts

You will not need a screw driver to make connections to these switches. Metal plates used to make the lever and slots are thick and do not easily bend under pressure.

See more Deluxe Knife Switches ...

Simple contact plate

One contact plate and two screws usually mount on a wooden board to act as a permanent (Off - On) or temporary (push button) switch. This simple and inexpensive method is used in many science kits. Minimum order 2000. Price $150/1000. Please call for availability.

Contact plate, Switch plate

Lear how to design switch circuits!


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


Miniature Light Bulb
Miniature Light Bulbs
Miniature Lamp holder
Miniature Lamp Holders

Metal lamp holders

Test Leads

Plastic Battery Holders

Buzzer, 3-V DC

Crystal Earphone
Simple Switch, Knife Switch
Simple Switch


Banana Jack
Banana Jacks
banana Plug
Banana Plugs
Binding Post
Binding Posts
Dynamo, Bicycle Generator
Dynamo, Generator
Electric Bell
Bells and Buzzers
Magnet Wire
Magnet Wire
Transformer Coil, Educational
Transformer Kit

Knife Switch with plastic screw connectors


UV Lamp/Fixture

Thermoelectric Cooler
Battery Holder, Metal, D Size
Metal Battery Holders

Thermoelectric Generator

Portable UV light (Blacklight)

Push Button Switches

Subminiature light bulbs

Plasma Ball

Educational Buzzer

Electric Bell

Copyright 2005 MiniScience Inc.