Iris Diaphragm with Adjustable Aperture, 3" Outer, 30mm Max Manufacturer_Austerlitz 5-inch stainless steel rod cradle

5-inch stainless steel rod cradle burettes

Open back reveals spine and posterior musculature while the head section preserves upper-body context

Base-mounted 2-stroke diesel engine model in aluminum and plastic

Built for industrial-scale dispensing and mixing

tightened with an Allen wrench for constructing lattice frameworks on laboratory benches

Iris Diaphragm with Adjustable Aperture, 3" Outer, 30mm Max Manufacturer_Austerlitz 5-inch stainless steel rod cradleAdjustable iris from closed to a 30mm maximum aperture inside a 3 inch black metal body, with a 2. 5 inch mounting rod giving 5 inches total length for standard optical bench setups.