Description
Pocket-sized 45mm aluminum compass with a graduated dial
a lamp house
and craniofacial anatomy teaching
Compact 16
Jolly's Photometer for Optical Bench Subject_Chemistry Pocket-sized 45mm aluminum compass withUsed to compare two light sources by sliding them until both faces of a paraffin block appear equally lit, this Jolly's photometer turns the inverse square law into a measurable observation.
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