• DIN 863-4
• Measuring ends: dia. 7 mm x 6 mm long, carbide tipped spherical lapped
• Thread pitch 1 mm
• Internal spring mounted rods with thermal protective sleeves
• Extensions greater than 100 mm: external steel tube dia. 17 mm, with thermal insulation
• Extensions 500 and 1000 mm: strengthened specification - steel tube dia. 32 mm
• Basic internal micrometer is adjustable: 50 mm. The sSindle is tight, so that during measurement the thimble does not adjust itself.