<https://drjmonteiro.com/product/slope-horizontal-vertical-angle-bevel-protractor-declinometer/#product>
<http://schema.org/description>
"FEATURES:\n\nBack angle and slope comparison table for easy comparison. Double-circle fluorescent blisters with high strength and easy to use.\nPrecision indicator, clear dial, accurate measurement.\nThe handle is user-friendly, comfortable to hold and easy to use.\nSuitable for measurement of slope and inclination angle of civil engineering, pipeline engineering and interior decoration engineering.\nMultifunctional Slope Gauge Engineering Inclinometer Slope Measuring Ruler, Universal Slope Degree Multifunctional Slope Measuring Instrument.\n\nHOW TO USE:\n\nTurn the rotary wheel to align the pointer with the slope (angle)\nTouch the measuring surface of the measuring instrument to the set item and move the set item until the level tube bubble is centered.\n\n\nSPECIFICATIONS:\n\nMaterial:ABS\nSize: 250*125.8*25.1\nWeight: 250g\n\nPACKAGE INCLUDED:\n\n1 × Slope Horizontal Vertical Angle Bevel Protractor Declinometer"
<https://drjmonteiro.com/product/slope-horizontal-vertical-angle-bevel-protractor-declinometer/>