Weights and Measures Regulations (C.R.C., c. 1605)

155 and 156 [Repealed, SOR/98-115, s. 13]

157 A machine shall be equipped with means to balance it at zero-load and if supplementary material is used for that purpose it shall be so enclosed that it cannot shift position or be readily removed or altered in such a way that the balance condition of the machine is affected.

158 A balance ball, balancing weight, spring adjustment, trim potentiometer or other zero adjusting means on a machine shall be operable only by a detachable tool, but on a machine of up to 15 kg or 30 pounds capacity, a balance ball may be operable without a detachable tool if the design provides for controlled friction to hold the balance ball in any set position.

• 159 (1) The overall range of the zero-setting mechanism of an electronic machine that may be adjusted externally shall not exceed four per cent of the machine’s rated capacity unless the adjustment is made using a tool that is not permanently affixed to the adjustment mechanism. When activated, that adjustment mechanism shall return the weight indication to zero.

• (2) The overall range of the zero-tracking mechanism of an electronic machine shall not exceed four per cent of the machine’s rated capacity.

• (3) The zero-tracking mechanism of an electronic machine shall not be operator-controlled and the maximum weight value corrected at any one time by the zero-tracking mechanism shall not exceed 0.6 times the value of the minimum increment of registration.

160 When an electronic computing machine displays a weight value less than zero, the total price indicator shall not display any value and the other registration elements, excluding the indicating elements, shall be interlocked to inhibit the registration of negative weight values.

161 The luminosity contrast between the visual indications and the background of the indicator of an electronic machine shall have a ratio equal to or greater than 4 to 1.

162 In order to allow for the adjustment of the weight of a commodity, the weight signal of an electronic computing machine must be free-floating until the final weight of the commodity is obtained.

163 An electronic machine shall be equipped with the means to seal the coarse zero and span adjustment controls so that all other components and adjustments are readily accessible without breaking the seal. The means shall be readily observable upon examination without having to disassemble any part using tools that are not supplied with the machine.

164 An electronic machine shall be equipped with a test system for verifying that each display segment is not continuously on or off. The test system shall permit verification of display segments without any tools or by a self-verifying automatic system that indicates the occurrence of any failure.

165 to 168 [Repealed, SOR/98-115, s. 14]

169 When a machine is equipped with a ticket printer or a label printer, the printed numbers and letters shall be of such size, character and colour that they may be easily read under normal conditions of use.

• 170 (1) An electronic machine, other than an electronic computing machine, shall not register or print any value when the load exceeds 105 per cent of the rated capacity of the machine.

• (2) An electronic computing machine shall not register or print any value when the load exceeds the rated capacity of the machine by more than 10 times the value of the minimum increment of registration.

171 A machine equipped with an electronic digital means of registration shall be capable of giving visual confirmation that it has been returned to zero-load within a range equivalent to the greater of

• (a) ¼ of the value of the minimum increment of registration, and

• (b) 0.01 per cent of the capacity of the machine.

• 172 (1) Subject to subsections (2) to (6), the value of the minimum increment of registration on a machine shall not be greater than 10 kg, if the machine measures in kilograms, or 20 pounds, if the machine measures in pounds, unless the capacity of the machine exceeds 100 000 kg or 200,000 pounds, in which case the value of the minimum increment of registration shall not be greater than 20 kg or 50 pounds, respectively.

• (2) The value of the minimum increment of registration on a tank scale that is designed for weighing alcohol or on a hopper scale that is designed for weighing grain in a terminal or transfer elevator shall not be greater than

  • (a) 5 kg or 10 pounds, if the capacity of the scale is equal to or less than 100 000 kg or 200,000 pounds;

  • (b) 10 kg or 20 pounds, if the capacity of the scale exceeds 100 000 kg or 200,000 pounds, but is equal to or less than 200 000 kg or 400,000 pounds; and

  • (c) 20 kg or 50 pounds, if the capacity of the scale exceeds 200 000 kg or 400,000 pounds.

• (3) The value of the minimum increment of registration on a continuous totalizing weighing machine shall not be greater than 100 kg or 200 pounds.

• (4) The value of the minimum increment of registration on an electronic computing machine shall not be greater than 10 grams or 0.01 pound.

• (5) The maximum value of the minimum increment of registration that is permissible on an electronic machine, other than an electronic computing machine, is set out in the following tables:

  Item	Column 1	Column 2
  	Capacity of Machine	Maximum Value of Minimum Increment
  	Kilograms	Kilogram(s)
  1	over 100 000	20
  2	over 20 000 to 100 000	10
  3	over 10 000 to 20 000	5
  4	over 5 000 to 10 000	2
  5	over 2 000 to 5 000	1
  6	over 1 000 to 2 000	0.5
  7	over 500 to 1 000	0.2
  8	over 200 to 500	0.1
  9	over 100 to 200	0.05
  10	over 50 to 100	0.02
  11	over 20 to 50	0.01
  12	20 and under	0.005

  Item	Column 1	Column 2
  	Capacity of Machine	Maximum Value of Minimum Increment
  	Pounds	Pound(s)
  1	over 200,000	50
  2	over 40,000 to 200,000	20
  3	over 20,000 to 40,000	10
  4	over 10,000 to 20,000	5
  5	over 5,000 to 10,000	2
  6	over 2,000 to 5,000	1
  7	over 1,000 to 2,000	0.5
  8	over 500 to 1,000	0.2
  9	over 200 to 500	0.1
  10	over 100 to 200	0.05
  11	over 50 to 100	0.02
  12	50 and under	0.01

• (6) The value of the minimum increment of registration on an electronic machine, other than an electronic computing machine, that is converted from the Canadian system of units to the International System of Units shall not exceed the converted value set out in the following table:

  Item	Column 1		Column 2
  	Present Value (Minimum Increment)		Converted Value (Minimum Increment)
  	Pound(s)	Ounce(s)	Kilogram(s)
  1	50	–	20
  2	20	–	10
  3	10	–	5
  4	5	–	2
  5	2	–	1
  6	1	–	0.5
  7	0.5	8	0.2
  8	0.2	4	0.1
  9	0.1	2	0.05
  10	0.05	1	0.02
  11	0.02	0.25	0.01
  12	0.01	0.125	0.005

• (7) The value of the minimum increment of registration of an electronic machine shall be equal to the number of kilograms or pounds obtained by using one of the following formulas:

  1 × 10ⁿ, 2 × 10ⁿ or 5 × 10ⁿ,

  where “n” represents a whole number, whether positive, negative or equal to zero.

173 [Repealed, SOR/98-115, s. 16]

Performance

174 Subject to sections 181 to 184 and 188 to 193, where a known test load set out in column I of an item of a table to section 176 or 177 is applied to a machine for the purpose of determining compliance with the acceptance limits of error, the machine is within the acceptance limits of error in respect of that known test load if the load registered by each means of registration of the machine is not greater or less than the known test load by an amount in excess of the amount set out in column II of that item.

175 Subject to sections 181 to 184 and 188 to 193, where a known test load set out in column I of an item of a table to section 176 or 177 is applied to a machine for the purpose of determining compliance with in-service limits of error, the machine is within the in-service limits of error in respect of that known test load if the load registered by each means of registration of the machine is not greater or less than the known test load by an amount in excess of the amount set out in column III of that item.

176 Subject to sections 188, 192 and 193, the limits of error set out in the following table apply to all machines registering in metric units of mass: