Eisco Labs Hooke's Law Spring auspowers_batchone Reliably manage your pH levels

Reliably manage your pH levels with the General Hydroponics pH Test Indicator

VViViD Heavy-Duty Adjustable Ruler (Angularizer 4 Holder Black Aluminum)

Cutting Capacity - up to 11/64" for medium wire

has dual conductivity so current will flow through both sides and the adhesive

Eisco Labs Hooke's Law Spring auspowers_batchone Reliably manage your pH levelsEisco Labs Hooke's Law Spring The Hooke's Law spring set is used as a piece of the Visual Scientifics Hooke's Law kit (SKU PTHOKL). Product Features 3 spring set for use with Visual Scientifics Hooke's Law Apparatus Spring Cylinder Length (Between Loops): 1. 25in Spring Cylinder Diameter: 0. 38in