Spare Pulley Accessory for Linear Air Track Glass Columns & Condensers_Air Condensers the larger working face giving

the larger working face giving longer beam paths for measurable lateral-displacement studies

with dual rotation dials for quantitative analysis of gear ratios and rotary motion transmission

Quality wooden 24-inch demonstration vernier caliper with a sliding arm

Wear-replacement timer switch for the goggle sanitizer cabinet

and a 1-degree protractor

Spare Pulley Accessory for Linear Air Track Glass Columns & Condensers_Air Condensers the larger working face givingRedirects a mass hanging cord at the end of a linear air track, this 0. 75 inch plastic pulley adds a vertical force vector to glider motion for Newton's second law work.