Great sensitivity to the price. Sensitivity is listed in the description. My rough measurements are 40 arcseconds per division. Each division is 2 mm, which corresponds to 20 arc seconds per mm. (My measurements consisted of placing a spirit level on a steel rod, adding shims to one end of the rod, and noting how far the bubble moved.)
Johnson Level & Tool 40-0912 Self-Leveling Cross-Line Laser Level, Red, 6 x 7 Inches
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π CAMWAY 6 Inch Digital Caliper with LCD Display, Electronic Vernier Caliper, 150mm Stainless Steel Feeler Gauge, Plastic Digital Caliper Set for Zero Setting Inside/Outside Diameter, Depth, and Step Measurement Tool
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TV bracket Kromax DIX-18 black
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