Several models of slope percentage indicators are offered by R & B Mfg Inc. Models measure in either degrees or percent of slope; a grade-to-one model is available. Operating temperature range is -50 F to +180 F. Units are built with the glass tube recessed in the low-profile body to prevent breakage. Numbers showing caution and danger limits can be painted on the indicators, and private labeling or warning are available. R & B also provides an audible beeper model.
For more information, contact R & B, 4948 NW High Dr, Riverside MO 64150.