ECON 1/4 STRP DP INV TP 13 1/4

Part# 12-01514


For drilling an accurate hole in overlapping sheets. The inverted type duplicator allows you to locate a hole from the back of an overlaping sheet. #10 #21 #30 #40 1/4" drill sizes, 6-1/4" or 13-1/4"

PN 12-01507 is pictured.


My fault for not looking at the picture more carefully before buying. The description even says INVERTED TYPE. The tool is quite well made but not what I expected or wanted. I have not come across a use for this type of strap duplicator yet but for the price of the tool relative to the shipping I will just keep them and see if a need ever comes up.

Airborne A
February 11, 2019


Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What size should I order for instrument panel screw holes?

Instrument screws are usually a 6-32 so you would want a #35 bit. I would go with the number 30 duplicator to make the initial hole and then follow up with a #35 drill.

Q: What does the 6-1/4" and the 13-1/4" mean in the size?

Those are the lengths of the tool itself.

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