Combination Square Set Maintenance and Care

3rd March 2020

	Combination square set maintenance and care


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			Storage
			When purchasing your combination square set, you may find that it is supplied in a box or case in which it can be kept when not being used.

			Checking for accuracy
			Over time, it is possible that the combination square set will become inaccurate.

			This may occur if there is a problem with the heads or rule.

			It is possible to test whether the square head/rule combination is inaccurate by attaching the square head to the rule and drawing a line from a straight edge.

			Flip the tool over and check whether the rule lines up exactly with the line you just drew. When drawing a second line, it should be parallel to the first.

			If this is not the case, then your rule or square head is likely not accurate.

			Inside the head you may find two little “pin-like” segments which the rule normally stays level with. If there is wear on the inside of the heads, the rule may sit at an angle.

			Repairing
			It may be possible to use a file to bring the rule back into line, taping the sides of the file to avoid filing the sides of the head. However, doing this may not be particularly precise, and some advise buying a new tool.

			Some manufacturers may simply replace the defective tool providing that it is still guaranteed under warranty and has not been mistreated.

			What else could cause the combination square set to fail? The combination square set may also fail if there is debris on or if there has been damage to the work surface.