MIL-P-288 — PROTRACTOR,THREE ARM

✓ Government record, cited

MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M · COMPONENT

PRODUCT OVERVIEW

MIL-P-288: PROTRACTOR,THREE ARM.

The PROTRACTOR,THREE ARM is a MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M industrial component. Key specifications include MATERIAL: COPPER ALLOY 745 ARM, BODY SHAPE: CIRCULAR, BODY DIAMETER: 6.000 INCHES IN, GRADUATION UNIT: 0.500 DEGREES, SCALE CALIBRATION: 0 TO 360 EVERY 10 DEGREES BOTH WAYS, EXTENSION ARM LENGTH: 13.500 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 6675-00-191-1513, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

MIL-P-288

NSN: 6675-00-191-1513
NIINs: 001911513, 001911514, 001911516
FSC: 6675 — Drafting, Surveying, and Mapping Instruments
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

SPECIFICATIONS

MATERIAL	COPPER ALLOY 745 ARM
BODY SHAPE	CIRCULAR
BODY DIAMETER	6.000 INCHES IN
GRADUATION UNIT	0.500 DEGREES
VERNIER QUANTITY	3
SCALE CALIBRATION	0 TO 360 EVERY 10 DEGREES BOTH WAYS
EXTENSION ARM LENGTH	13.500 INCHES IN
TANGENT SCREW QUANTITY	2
VERNIER SMALLEST INCREMENT	1.000 MINUTES
NONDEFINITIVE SPEC/STD DATA	2 CLASS AND 1 TYPE
MOVABLE ARM CLOSING TO ZERO MARK	RIGHT-HAND
ACCESSORY COMPONENTS AND QUANTITY	ANY ACCEPTABLE
NSN	6675-00-191-1513

COMPONENT DIAGRAM

KEY FEATURES

•

SCALE CALIBRATION: 260 TO 350,ZERO AT TOP CONTINUING TO 100 EVERY 10 DEG OUTER SCALE 80 TO 280 EVERY 10 DEG INNER SCALE

•

ARM LENGTH FROM CIRCLE OUTER EDGE: 8.875 INCHES IN

•

BODY DIAMETER: 8.000 INCHES IN

•

BODY SHAPE: SEMICIRCULAR

•

NONDEFINITIVE SPEC/STD DATA: 2 CLASS AND II TYPE

•

GRADUATION UNIT: 0.500 DEGREES

•

MATERIAL: PLASTIC BODY

TECHNICAL CHARACTERISTICS

SCALE CALIBRATION	260 TO 350,ZERO AT TOP CONTINUING TO 100 EVERY 10 DEG OUTER SCALE 80 TO 280 EVERY 10 DEG INNER SCALE
ARM LENGTH FROM CIRCLE OUTER EDGE	8.875 INCHES IN
BODY DIAMETER	8.000 INCHES IN
BODY SHAPE	SEMICIRCULAR
NONDEFINITIVE SPEC/STD DATA	2 CLASS AND II TYPE
GRADUATION UNIT	0.500 DEGREES
MATERIAL	PLASTIC BODY
MATERIAL	PLASTIC ARM

SUBSTITUTES & CROSS-REFERENCES 2

667500006Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

A-A-59478Reference document

Same NSN cross-reference

Reference document — Identification reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MIL-P-288?

MIL-P-288 is a PROTRACTOR,THREE ARM manufactured by MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M.

What parts can replace MIL-P-288?

There are 2 known substitutes for MIL-P-288: 667500006, A-A-59478. Substitute compatibility should be verified for your specific system.

What is the NSN for MIL-P-288?

MIL-P-288 is cataloged in the U.S. Government catalog under NSN 6675-00-191-1513. This indicates validated use in U.S. government and defense supply chains.

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