Comes in Packs of 5
Each wood dowel rotor is made of a 10cm long wood dowel with outer diameter of about 2centimeters. Both ends are turned to reduce the outer diameter to 7mm (3/8"). A 1/2" hole is made in the middle part to house a bar magnet or cow magnet.
The digital stopwatch is a cheaper alternative to the more
expensive analog products we offer. You can perform timing experiments or
use it to measure your pulse, lap time, etc.
This Vernier Caliper is for inside and outside measurement in metric system with precision of 0.05mm. It is ideal for learning precision measurement techniques
by using the vernier principle.