US$ 180.00
Air-cooled 225-ohm 1
Hand-painted skin cross-section enlarged 300 times exposes epidermal layers
displayed on a plastic-and-metal rack with a carrying handle for transport
001 inch with a friction roller and a lock mechanism for held readings
Fitted with a grey hand knob for tightening and a small plastic pulley
Steel Extension Spring, 6 x 0.25" Category_Science Gifts Air-cooled 225-ohm 1Six inch steel extension spring with looped ends at 0. 25 inch diameter, the mid length option for paired Hooke's Law comparisons against 4 inch and 9 inch siblings in the series.
US$ 180.00
US$ 25.00
US$ 99.00
US$ 107.50
US$ 10.90
US$ 20.00