Compatible Timer for Digital Lab Timer (LBTM) Lab Supplies_Stirring Bars & Rods 4-inch thickness on a polished

4-inch thickness on a polished right-angled acrylic refraction prism

5 inch specific gravity cylinder with a top hook for density and specific-heat work

and arthropod organization for teaching

Snap-together polypropylene test tube rack holding 40 tubes up to 20 mm across a 9

this resistor module on a demonstration base with 4mm plug connections drops into series with bulbs and LEDs in student circuits

Compatible Timer for Digital Lab Timer (LBTM) Lab Supplies_Stirring Bars & Rods 4-inch thickness on a polishedFourteen millimeter LED display on this precision digital timer, driven by a 10 MHz quartz oscillator across four operating modes and bundled with two photogates for physics timing experiments.