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Point Sae Metric

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12 PC FLARE NUT LINE WRENCH SET SAE AND METRIC 6 POINT PRO GRADE
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Blue Point Socket Set SAE Metric Impact Twist Deep 13 pc set
US $219.00
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26pc CALHAWK ALLEN BALL POINT END LONG ARM HEX KEY WRENCH SET SAE METRIC
US $29.99
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Craftsman 3 8 drive 12 point SAE and Metric sockets 19 pcs
US $15.00
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19 pc USA socket set SAE and Metric 6 point
US $5.99
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26 pc Craftsman USA SAE Metric deep well sockets 6 point 12 point
US $9.99
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20 pc STANLEY SAE Metric sockets 6 point Dewalt P2
US $5.99
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12 pc Chrome Vanadium SAE Metric sockets 6 point
US $5.99
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SNAP ON TOOLS 3 8 1 4 DRIVE SHALLOW IMPACT CHROME 6 12 POINT SOCKETS SOCKET SET
US $3.88
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SNAP ON 1 2 IMPACT SWIVEL 6 POINT SOCKETS SAE METRIC
US $46.00
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MAC 3 8 DRIVE IMPACT SWIVEL SOCKETS 6 POINT METRIC SAE
US $1.00
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MATCO 3 8 DRIVE UNIVERSAL SOCKETS 6 POINT METRIC SAE
US $46.00
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K D TOOLS 50 PIECE 1 4 3 8 DRIVE SIX POINT SAE METRIC SOCKET SET MADE IN USA
US $37.95
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Kobalt 20 Piece Standard SAE And Metric 1 4 Drive 6 Point Socket Set
US $18.99
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BLUE POINT Craftsman Offset Ratcheting Box End Wrench Set Metric SAE 7 Pieces NR
US $14.50
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44 Piece 1 4 Drive 6 Point SAE Metric Standard and Deep Complete Socket Set
US $139.99
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BAHCO FACOM WILLIAMS STANLEY 3 8 SAE 48 PC SOCKET RATCHET EXTENSION SET USA
US $89.99
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BAHCO SK FACOM WILLIAMS 3 8 SAE 33 PC SOCKET RATCHET EXTENSION SET USA
US $119.99
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BAHCO SK KLEIN FACOM STANLEY 3 8 SAE 30 PC SOCKET RATCHET EXTENSION SET USA
US $89.99
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49 Piece 1 2 Drive 12 Point SAE Metric Socket Set KDT80701 BRAND NEW
US $283.55
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What do the little diamonds on my tape measure mean?

OK. So, I've been using a tape measure practically all my life.

Someone recently pointed something out that I had never noticed.

There is a little diamond that appears along the tick marks at intervals of 1' - 7 3/16".

(The second one appears at #' - 2 3/8", the third at 4' - 9 9/16" and so on).

What is this increment?

It doesn't appear to correlate with SAE or Metric increments.

Is it some wierd, traditional military measurement.

Help Please.

Sometimes framing members, especially floor joist are specified to be spaced at 19.2" on center. 19.2" is roughly 19 3/16" or 1' 7 3/16", so the diamonds make it easy to identify this spacing along the full length of the measure.

This has mostly come about with engineered floor joists. It is often overkill to space these at the traditional 16" on center, but 24" on center is a bit much. 19.2" is the increment in between that works well with 4' x 8' plywood laid perpendicular to the joists. 8', or 96" divided by 5 = 19.2", so the joints fall on a joist and there is no waste.

Amazing

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