Sleeve shows: 12 mm (half-mm line IS visible) Thimble aligns: 15 divisions Reading = ______ mm
A micrometer can measure the thickness of a human hair easily. (T / F) ✅ Solutions with Explanations Section A Solutions 1. 5.00 + (32 × 0.01) = 5.32 mm Explanation: No half mm, so sleeve = 5.00
12.50 + (15 × 0.01) = 12.65 mm Explanation: Half-mm visible = add 0.50
8.50 + (3 × 0.01) = 8.53 mm
Average = (6.25 + 6.27 + 6.26) ÷ 3 = 18.78 ÷ 3 = 6.26 mm Section C Answers 10. False – The thimble typically has 50 divisions , each = 0.01 mm. Some have 100 (0.001 mm resolution), but standard school ones use 50.
The ratchet prevents over-tightening and damage. (T / F)
Sleeve shows: 3 mm (half-mm line NOT visible) Thimble aligns: 47 divisions Reading = ______ mm micrometer screw gauge worksheet with solution
Zero error = +0.04 mm (excess). True thickness = Scale reading – Zero error = 5.72 – 0.04 = 5.68 mm If zero error were negative (-0.04), you would add.
3.00 + (47 × 0.01) = 3.47 mm (Note: Thimble 47 means 0.47 mm)
Sleeve = 2.00 mm, Thimble = 0.08 mm Total = 2.08 mm Sleeve shows: 12 mm (half-mm line IS visible)
0.50 + (25 × 0.01) = 0.75 mm Explanation: Sleeve shows 0 + half-mm line = 0.50 Section B Solutions 6. Sleeve = 1.50 mm, Thimble = 0.42 mm Total = 1.92 mm
– The ratchet slips when the correct pressure is applied, preventing damage to the screw or object.