Digital Counter For event counting, a fixed counting period can be programmed in a range from 0.1 ms to 99999 s. Counter events (e.g. start or stop) can either be triggered by a signal to the input sockets or manually via switches. The unit includes a plug-in power supply.
Number, Measurement and Space, module establishes equivalence of sets by a one-to-one exchange of objects. Eg Upsetting equivalance (destroying conservation of numbers) by adding one object to a set, or taking one away, helps introduce vocabulary for comparing quantity
Component Balance, Measuring Range: 0-0.3 N, Diameter Of The Scale: 170 mm, Dimensions: Approx. 350X220 mm2, Rod Diameter: 10 mm, Weight: Approx. 0.9 Kg, Scales For Measuring Components With Holding Mechanism For Measuring Air Resistance And Buoyancy Of Bodies From Set.