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Handheld Tally Counter with 4-Digit Display Subcategory_Gas Washing Bottles and classroom precision measurement

Handheld Tally Counter with 4-Digit Display Subcategory_Gas Washing Bottles and classroom precision measurementHandheld mechanical tally counter with four digit display and finger ring tracks cell counts, plankton samples, and population data in lab and field work.

SKU: 74395529488 · From nataliaortizwed.com

4.8
USD22.59 USD47.59

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Description

and classroom precision measurement

running on 3-6V DC to illustrate both motor and generator operation

Three-legged spherometer with legs spaced 40 mm apart and a vertical scale reading -10 to +10 mm at 0

Continuously motor-driven to supply a steady high-voltage source

Amoeba Proteus model at 1000x magnification reveals extended pseudopod

Handheld Tally Counter with 4-Digit Display Subcategory_Gas Washing Bottles and classroom precision measurementHandheld mechanical tally counter with four digit display and finger ring tracks cell counts, plankton samples, and population data in lab and field work.

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