MITUTOYO 368-913 3-Point Internal Micrometer Holtest Set, 20-50mm, 4 Piece
This is a set of metric 3-point internal micrometers 
Features
- Stable measurement through automatic centering
 - Carbide measuring surface (2-6 mm range)
 - 2 setting rings and 2 extension
 
Specifications
- Inch-Metric: Metric
 - Range: 20 - 50 mm
 - Graduation: 0,005 mm
 - Individual ranges: 20-25, 25-30, 30-40, 40-50 mm
 - Mass: 960 g
 - Scale: Thimble and sleeve satin chrome finish,
Up to 12 mm : Ø 17 mm
Over 12 mm : Ø 23 mm - Measuring spindle: Spindle pitch 0,5 mm
 - Measuring face: Titanium coated tungsten carbide
taper: tungsten carbide - Measuring method: 3-point
 - Models included: 368-166 / 368-167 / 368-168 / 368-169
 - Setting rings included: ø25 mm (177-139)
ø40 mm (177-290) - Delivered: Including box, key, setting ring, extension rod, certificate of inspection (measuring instruments only)
 - Digital/Analog: Analog