Medium Armor Sideload Transmitter Housing - 3.75" OD x 2.875" API
Chemistry Laboratory Stand Set, with Support Stand (21x14cm), 2 Retort Rings (Dia. 5cm/7.3cm), Rod (Length 40cm) and Flask Clamp: Amazon.com: Industrial & Scientific
Ex 14.2, 1 - Draw a line segment of length 7.3 cm using a ruler