US$ 19.99
and storage between uses at the laboratory bench
supporting up to three pendulums simultaneously for harmonic-motion work
Eight aluminum-shank tuning forks tuned to scientific pitch (C4 = 256Hz) and ranging from 5 9/16 to 7 1/8 inches
these concavity microscope slides hold liquid samples for hanging-drop preparations and observation of specimens in suspension
including sp3
Single Contact Morse Code Key Base_Octagonal and storage between uses atPlated spring arm with press knob and a single contact stud, configured to make and break a circuit at the rhythm of a Morse code transmission for telegraph history demonstrations.
US$ 19.99
US$ 30.00
US$ 19.99
US$ 484.50
US$ 43.49
US$ 12.00