Non-Vented Wide Mouth LDPE Squeeze Rinse Wash Bottle for Plant Watering, 500mL Subcategory_Health and Genetics Solid wooden resonance box mounts

Solid wooden resonance box mounts four steel forks tuned to C 256Hz

fastened by two wide-pad stainless steel thumb screws under heavy torsional load

Epoxy-coated steel wire test tube rack with 80 holes in an 8 by 10 layout

and iron rods for linear-expansion comparison

the simple mount steadying optics elements at bench height for refraction

Non-Vented Wide Mouth LDPE Squeeze Rinse Wash Bottle for Plant Watering, 500mL Subcategory_Health and Genetics Solid wooden resonance box mountsBuilt for plant and succulent watering, this 500mL wide mouth LDPE squeeze rinse bottle features a non vented cap for controlled directed dispensing.