Linear Actuator

This device precisely changes the linear position of a sample (e.g. inside a 5mm NMR tube). The sample must fit into a small test tube, as the bore size of the actuator is 5mm. We have been using the actuator to position the sample inside a magnetic field as with a [Halbach Mandhala](https://www.thingiverse.com/thing:3012509). However, its handiness is not limited to physics and could reliably be used for activities in any science. (For example, biologists may use it in manipulating slides.) The layperson could even use it in any situation requiring precise movement of small objects.

The first file is our first version of the model. Then we made it more compact and altered the design to be easier to construct. This 'mini-actuator' is made of the 4 pieces in the last four files. This is not a final model, and more changes may be to come. We also invite you to edit it as you see fit!

This model was originally made by Arav Misra and edited by Sarah Lawrence Physics undergraduates w