Buying notes·Page updated
Starrett 505P-7: A 7-inch Plastic Miter Protractor
Is this the right fit?
- Skip if
- This is the plastic 505P-7, not the aluminum 505A-7.
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- Confirm the dimensions, exact model, included parts and return terms on the Amazon listing before ordering.
Listing-based buying notes. We have not tested this product hands-on. Confirm the selected size, seller and current terms on Amazon.
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A 7-inch plastic angle tool with miter-cut and single-cut readings. The 505P-7 differs from the aluminum 505A-7. We have not tested angle accuracy or resulting joints hands-on.
Pros
- A miter-cut scale supplies a dedicated reading type.
- A single-cut scale supplies a separate reading type.
- The 7-inch body offers a compact format.
Cons
- This is the plastic 505P-7, not the aluminum 505A-7.
- Compound crown molding requires additional information and the manufacturer’s conversion guidance.
- No perfect-cut or calibration guarantee is asserted.
Frequently asked questions
What material is specified?
Plastic for 505P-7; 505A-7 is a separate aluminum model.
Does one dial reading cover every crown-molding setup?
No. Starrett’s guide also uses the molding’s spring angle and a compound-cut conversion table.
Is measurement accuracy independently verified here?
No. These are documentation-based notes, not a hands-on calibration or joint-fit test.
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