Weight of a Sign

Arbor Scientific 1000g/10 N Spring Scale
1000g/10 N Spring Scale

$5.50

Arbor Scientific Ring Stand Base with Rod
Ring Stand Base with Rod

$18.00

Arbor Scientific Protractor
Protractor

$1.05

Arbor Scientific No-Stretch Pulley String, 25 meters
No-Stretch Pulley String, 25 meters

$4.00