The least count of steel rule in inch is _______.

Explanation:

Engineer’s steel rule:

• Engineer’s steel rules are used to measure the dimensions of workpieces.
• Steel rules are made of spring steel or stainless steel.
• These rules are available in lengths of 150 mm, 300 mm, and 600 mm.
• The reading accuracy or least count of the steel rule is 0.5 mm and 1/64 inch.
• For an accurate reading, it is necessary to read vertically to avoid errors arising out of parallax.
• Steel rules in English measure, can also be available with metric and English graduation in a complete range of sizes 150, 300, 500, and 1000 mm.