The Weights and Measures (Local and Working Standard Capacity Measures and Testing Equipment) Regulations 1990

Regulation 19

SCHEDULE 3 WORKING STANDARD CAPACITY MEASURES AND TESTING EQUIPMENT

(excluding proving tanks, proving tanks for water, graduated measuring cylinders, displacement plungers, reference meters, reference meters for water, differential pressure gauges and piston provers)

(a) Imperial		(b) Metric
Indicated capacity of or tolerance mark relating to—	Limit of error	Indicated capacity of or tolerance mark relating to—	Limit of error
¼ gill or less	0.2 ml	1 ml or 2 ml	0.1 ml
⅓ gill	0.3 ml	5 ml or 10 ml	0.2 ml
⅓gill	0.3 ml	5 ml or 10 ml	0.2 gill
⅖ gill or ½ gill	0.4 ml	20 ml or 25 ml	0.2 ml
4 fl oz	0.5 ml	50 ml	0.3 ml
1 gill (5 fl oz)	0.6 ml	100 ml	0.4 ml
6 fl oz	0.7 ml	125 ml	0.5 ml
⅓ pt, 8 fl oz or ½ pt	0.8 ml	150 ml	0.6 ml
1 pt	1.0 ml	175 ml	0.7 ml
1 quart or ½ gal	2.0 ml	200 ml or 250 ml	0.8 ml
1 gal	5.0 ml	500 ml	1.0 ml
2 gal	10.0 ml	1 l or 2 l	2.0 ml
3 gal	15.0 ml	2.5 l	2.5 ml
4 gal	20.0 ml	5 l	5.0 ml
5 gal	20.0 ml	10 l	10.0 ml
more than 5 gal	0.1 per cent	more than 10 l	0.1 per cent

PROVING TANKS

The permitted limit of error on proving tanks shall be 0.02 per cent of the nominal capacity.

PROVING TANKS FOR WATER

The permitted limit of error on proving tanks for water shall be 0.1 per cent of the nominal capacity.

GRADUATED MEASURING CYLINDERS

Nominal Capacity Metric	Limit of error
5 ml	0.2 ml
10 ml	0.2 ml
25 ml	0.25 ml
50 ml	0.5 ml
100 ml	0.8 ml
250 ml	1.5 ml
500 ml	2.0 ml
1000 ml	4.0 ml
2000 ml	8.0 ml
Imperial
¼ gal	4.0 ml
½ gal	8.0 ml