Resource
Calibration log
Paper log for squares and dials.
Who Needs a Calibration Log?
If you’re running a plant bench in Germiston or fitting out a small trade counter in Tyger Valley, a calibration log gives you the paper trail needed for proper tool checks. Maintenance leads, FET college workshop supervisors, and yard buyers use these logs to prove their tools meet spec for every shift. Whether it’s a monthly check on your CNC's digital calliper or keeping the square true for vinyl trimming, proper record-keeping keeps safety and output steady when a staff change or compliance check happens.
Step-By-Step: Making Entries
Each sheet has clear columns to fill: date, tool ID, type (like dial indicator, engineer’s square, or depth gauge), person doing the check, result (pass/fail), and any corrective action. Maintenance teams write the unique code for each item. For example, you’d enter 2024-06-15, Gauge #15, 'dial indicator', 'Sizwe', 'pass', no action. If it fails, jot the fault and your quick fix. Keep it on the rack near the machine bay, like in a CNC cell at a Germiston yard or an FET college’s toolroom.
Worked Example: Daily Shop Use
Let’s say Lindiwe is the plant lead doing her Monday sweep in a Sunnyrock bench bay. She picks up Aluminium Square #4, cleans it for Highveld dust, and checks against the master block. She fills: 2024-05-20, Square #4, 'engineer’s square', 'Lindiwe', 'fail', 'out by 0.3 mm, replaced'. Next, she marks the square for removal, and her manager checks the log during the weekly review. It’s simple, but you’d be surprised how often someone forgets to record the failed readings, your audit lands flat if you miss that field.
Common Mistakes to Avoid
A lot of teams skip a column thinking it’s not important, or they record 'pass' without a check. Another bad habit is mixing up tool IDs, it’s easy to write ‘Square 7’ when you used Square 8, especially with faded tags. Always use the full date and keep the completed log in a dry spot out of the coastal humidity if your shop is near Boardwalk or Gateway. Never rely on memory, and make sure all entries are written in pen so they don’t smudge or go missing after a spill.
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