Magnetic Needle with Brass Cup Bearing, 4", Carbon Steel Lab Equipment and Supplies_Racks & Stands Virtually friction-free 2-meter air track

Virtually friction-free 2-meter air track shipped with vehicles

this fan-shaped nylon brush rides a twisted stainless steel handle flexible enough to bend around difficult interior angles

Two-position copper plug key switch with 4mm terminals and two removable plugs

this LPG Meker burner also includes flame stabilization and flow control

Magnetic Needle with Brass Cup Bearing, 4", Carbon Steel Lab Equipment and Supplies_Racks & Stands Virtually friction-free 2-meter air trackUsed as a sensitive direction finder when paired with a tangent compass stand, this 4 inch carbon steel needle pivots on a brass cup bearing for low friction rotation under the local field.