Product Code: ME-8960


The low friction, open design of PASCO’s Gyroscope enables rotational motion studies that were previously impossible with commercial units. The completely open design lets students stop precession by grabbing the vertical shaft, causing the Gyroscope to dip. Rotational mathematics can predict the dipping motion, but with PASCO’s Gyroscope it can finally be confirmed.


  • Low Friction: The disk takes almost 6 minutes to slow to half of its original speed due to low-friction bearings in the gyroscope axle and vertical shaft.
  • Accurate Angle Indicator: Measures from 30° to 140° and is easily read to the nearest degree. A retractable stop acts as a marker during experiments.
  • Easy Timing: Low rotation speeds allow measurement of angular speed by counting revolutions and using a stopwatch.
  • Easy Balancing: Two counterweights allow coarse and fine balance adjustment.
  • Large Inertia Disk: With the large rotational inertia of the disk, PASCO’s gyroscope generates precession rates similar to smaller, enclosed gyroscopes. The slow rotation speed of PASCO’s disk lets students study fast as well as slow precession and use a stopwatch to make measurements.

How It Works

The disk is spun by wrapping a string around the pulley and pulling. Or the disks can be spun by hand. Add mass to either end of the gyroscope and it responds with a predictable precession. Many features make this an exceptional demonstration tool for rotational motion concepts.


Small parts. Not for children under 3 years.

Recommended Accessories

Gyroscope Disk and Mass ME-8961
A-Base Rotational Adapter CI-6690
Gyroscope Mounting Bracket — Rotary Motion Sensor ME-8963
Wireless Rotary Motion Sensor PS-3220

Support Documents

Gyroscope 3 Axis Manual

Manual Downloads

Product Manuals for the Gyroscope (3 Axis) (ME-8960)

Replacement Parts

Metal Knobs and Feet

Set of 4 spare leveling feet and knobs for use with a Large Rod Base.