US$ 223.35
formed to measure atmospheric pressure through mercury or indicator-fluid column rise
Plano-cylindrical lens at 50 by 50mm with 17 diopter optical power and ground polished edges
Wooden-handled bimetallic strip of bonded copper and steel
focal-length
Tirrill Natural Gas Bunsen Burner with Cast Iron StabiliBase and Gas Flow Control Human Anatomy_Human Anatomy Charts & Models formed to measure atmospheric pressureNatural gas Tirrill Bunsen burner pairing a gas flow valve with air flow adjustment for finer flame control, set on a cast iron anti tip base for bench stability.
US$ 223.35
US$ 128.70
US$ 158.40
US$ 756.80
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US$ 145.20
US$ 1087.00