US$ 37.98
5 mm inner profile
a step up from the 70mm model with extended pole separation that gives field-mapping experiments more room along the magnet axis
each lens stowing into the housing for pocket-portable classroom
Life-size liver model with attached gall bladder shows hepatic lobes
the classic demonstration of differential radiant-heat absorption
Steel Folding Quadrat, 0.5m Square Length_75mm 5 mm inner profileBolt together folding quadrat of white coated steel rods, forming a half meter square for ecological field sampling and population count fieldwork.
US$ 37.98
US$ 36.00
US$ 10.00
US$ 40.00
US$ 22.00