# Measurement Reading Exercises (Ruler and Meter stick)

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```					Measurement Reading Exercises
(Ruler and Meter stick)
Recall:
• Precision of Instrument  smallest
calibration or the finest division
• Precision of Measurement or Uncertainty 
half of the precision of the instrument or half
of the finest division
• In reading measurements, do not forget to
include the doubtful figure, the uncertainty,
and the unit when reading measurement.
Ruler
millimeter scale

10mm        20mm        30mm         40mm   50mm

Precision of Instrument:    1 mm

Uncertainty:                0.5 mm
Sample Reading:             14.5 ± 0.5 mm
Ruler
centimeter scale

1cm         2cm         3cm       4cm   5cm

Precision of Instrument:    0.1 cm

Uncertainty:                0.05 cm
Sample Reading:             1.45 ± 0.05 cm
Meter stick 1
centimeter scale (up to 100.00 cm)

1cm        2cm         3cm       4cm   5cm

Precision of Instrument:   0.1 cm

Uncertainty:               0.05 cm
Sample Reading:            5.00 ± 0.05 cm
Meter stick 2
centimeter scale (up to 100.00 cm)

5 cm       10 cm       15 cm     20 cm   25 cm

Precision of Instrument:   0.5 cm

Uncertainty:               0.25 cm
Sample Reading:            23.3 ± 0.25 cm
Showdown 1
Ruler

10mm      20mm       30mm     40mm   50mm

Measurement Reading:   20.0 ± 0.5 mm
Showdown 2
Ruler

10mm      20mm       30mm     40mm   50mm

Measurement Reading:   49.5 ± 0.5 mm
Showdown 3
Ruler

10mm      20mm       30mm     40mm   50mm

Measurement Reading:   36.0 ± 0.5 mm
Showdown 4
Ruler

1cm       2cm        3cm         4cm     5cm

Measurement Reading:      4.00 ± 0.05 cm
Showdown 5
Ruler

1cm       2cm        3cm         4cm     5cm

Measurement Reading:      2.55 ± 0.05 cm
Showdown 6
Ruler

1cm       2cm        3cm         4cm     5cm

Measurement Reading:      3.05 ± 0.05 cm
Showdown 7
Meter stick 1

1cm      2cm         3cm        4cm         5cm

Measurement Reading:       4.55 ± 0.05 cm
Showdown 8
Meter stick 1

1cm      2cm         3cm        4cm         5cm

Measurement Reading:       2.05 ± 0.05 cm
Showdown 9
Meter stick 1

1cm      2cm         3cm        4cm         5cm

Measurement Reading:       3.10 ± 0.05 cm
Showdown 10
Meter stick 2

5 cm     10 cm      15 cm     20 cm    25 cm

Measurement Reading:     6.50 ± 0.25 cm
Showdown 11
Meter stick 2

5 cm     10 cm      15 cm     20 cm     25 cm

Measurement Reading:     11.00 ± 0.25 cm
Showdown 12
Meter stick 2

5 cm     10 cm      15 cm     20 cm    25 cm

Measurement Reading:     15.3 ± 0.25 cm
Showdown 13
Meter stick 2

5 cm     10 cm      15 cm     20 cm    25 cm

Measurement Reading:     20.8 ± 0.25 cm
Showdown 14
Meter stick 2

5 cm     10 cm      15 cm     20 cm    25 cm

Measurement Reading:     4.50 ± 0.25 cm
Showdown 15
Meter stick 2

5 cm     10 cm      15 cm     20 cm     25 cm

Measurement Reading:     12.50 ± 0.25 cm

```
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