Altimeters; Carpenters' rules; Clinometers; Ergometers not for medical purposes; Hydrometers; Instruments for measuring length; Laboratory equipment and supplies, namely, calipers; Length measuring gauges; Level measuring machines; Magnifying glasses; Measuring rules; Measuring spoons; Micrometers; Microscopes; Pressure gauges; Refractometers; Slide calipers; Slope indicators; Spirit levels; Temperature indicators; Weighing apparatus and instruments; Measuring rulers