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Starrett Tool Index

Inside Micrometers

Inside Micrometer Sets

Starrett Inside Micrometer Sets

Inside Micrometer Sets by Starrett

No. 128 Series Sets (6-294")
No. 128M Series Sets (150-7350mm)

These sets of inside micrometers are ideal for a wide range of precision inside measurements in aircraft, metalworking and other industries.

Each set consists of a satin-chrome micrometer head which can be used in combination with any one or more of a series of rigid, tubular steel measuring rods to obtain the required length.

The micrometer head is a modification of our No. 63, which has a 2" (50mm) range. The head has a basic length of 4" (100mm) which can be lengthened to 6" (150mm) by means of its measuring range. Besides those listed on the lead page of this section, the No. 128 Series have these additional features:

For inside measurements from 6-294" (150-7350mm) (longer sizes are also available on special order)
Interchangeable tubular steel measuring rods and extension rods are lightweight with extreme rigidity. Rods screw into each other and seat against hardened ground and lapped surfaces necessary for high accuracy. Rod diameter 5/8" (16mm)
Rods are provided with insulated handles to minimize expansion from hand heat. All rods marked with length
All rod anvil contacts are hardened and ground
All measuring rod anvil contacts are adjustable (plain extension rods are not adjustable)
Adjustable, ground steel supporting collars (placed in "V" grooves when used in the horizontal position)

Starrett 128, 128M Series - Inside Micrometer Sets

6-294" / 150-7350mm Ranges

6-294" Range

Range with Micrometer Head	Movement of Screw	Graduation	Description	Range with Combination Head	Catalog No.	Price
6-78"	2"	.001"	With (1) 4-6" Head, (1) each 2", 4", 6", 8", 10", 12" Rods, (1) 12" Ext., (2) 24" Ext.	11-83"	128AZ	$1819.25
6-150"	2"	.001"	With (1) 4-6" Head, (1) each 2", 4", 6", 8", 10", 12" Rods, (1) 12" Ext., (5) 24" Ext.	11-155"	128BZ	$2556.75
6-294"	2"	.001"	With (1) 4-6" Head, (1) each 2", 4", 6", 8", 10", 12" Rods, (1) 12" Ext., (11) 24" Ext.	11-299"	128CZ	$3585.00

150-7350mm Range

Range with Micrometer Head	Movement of Screw	Graduation	Description	Range with Combination Head	Catalog No.	Price
150-1950mm	50mm	0.01mm	With (1) 100-150mm Head, (1) ea. 50, 100, 150, 200, 250, 300mm Rods, (1) 300mm Ext., (2) 600mm Ext.	300-2100mm	128MAZ	$1819.25
150-3750mm	50mm	0.01mm	With (1) 100-150mm Head, (1) ea. 50, 100, 150, 200, 250, 300mm Rods, (1) 300mm Ext., (5) 600mm Ext.	300-3900mm	128MBZ	$2556.75
150-7350mm	50mm	0.01mm	With (1) 100-150mm Head, (1) ea. 50, 100, 150, 200, 250, 300mm Rods, (1) 300mm Ext., (11) 600mm Ext.	300-7500mm	128MCZ	$3585.00

	Starrett Micrometer Index
	Starrett Precision Measuring Tool Index

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