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Hand tools (measuring and checking tools (combination set (centre head,…
Hand tools
cutting tools
measuring and checking tools
Vernier calliper
metric
Imperial
accuracy of 10 micrometres.
combination set
centre head
square head
protractor head
rule / blade
scribbler/spirit level/locking nut
protractor
steel rule
micrometre
The spindle of an ordinary metric micrometer has 2 threads per millimetre, and thus one complete revolution moves the spindle through a distance of 0.5 millimeter
spirit level
straight edge.
tri square
set square
trend M3 square
dial test indicator
feeler gauges
made out of steel
tapered
parallel
imperial units (typically measured in thousandths of an inch)
metric (typically measured in hundredths of a millimetre)
slip gagues
More recent grade designations include (U.S. Federal Specification GGG-G-15C):
workshop (B): large tolerance (tolerance +0.25 μm to −0.15 μm) used as shop standards for precision measurement
inspection (A): (tolerance +0.15 μm to −0.05 μm) used as toolroom standards for setting other gauging tools
calibration (AA): (tolerance +0.10 μm to −0.05 μm) used to calibrate inspection blocks and very high precision gauging
reference (AAA): small tolerance (±0.05 μm) used to establish standards
weighing scale
weigh mass of objects
accuracy-
made out of metal
metric and imperial