Technical Data:
Series: 139
Product type: Extension-Pipe Type Main Unit
Measuring range: 4 - 5 in
Graduation: 0.001 in
Micrometer head stroke: 1 in
Reference setting: Reference gage required
Optional reference-setting methods: Gage Block Accessory Set, CERA Inside Micro Checker, or setting ring

Dimensions:
Main-unit body length=100 mm
Micrometer-body reference length=47 mm
Left-end reference length=4.5 mm
Right-end reference length=3 mm
Measuring tips Dia.=8 mm
Body/reference Dia.=18 mm
Extension-pipe thread=M9.5x0.5
Measuring faces=SR10 both ends