Since 1907, Ohaus has provided an extensive selection of precision calibration, and general purpose weights and weight sets. Today Ohaus is a 9001 registered company and one of the world's leading suppliers of weighing equipment.We offer precision weights and weight sets that meet or exceed the highest tolerance standards of the National Institute of Standards & Technology (NIST), the American Society for Testing & Materials (ASTM), the International Organization of Legal Metrology (OIML).
Ohaus offers a wide range of weights in various denominations, materials, and units of measure. The Ohaus weight offering includes weights adjusted to US and International tolerances. Ohaus weights are available in materials of Stainless Steel, Brass, Aluminum, and Cast Iron. Shapes range from tiny milligram flat weights, bottle style weights and grip and pipe handle weights.
What type of weights do you need?
Ohaus Hook Weights
Ohaus Hook Weights are used in a variety of applications such as pressure, torque, and tensile strength testing.
Ohaus Hook Weights range from 10 g to 1 kg (0.1 N to 10 N) and are made of brass. On all Hook Weights, except the 10 g, there is a hook on the top and the bottom of the weight so the weights can be hooked together. The 10 g (0.1 N) Hook Weight has a hook on the top only. The design of the Hook Weight allows the bottom hook to be recessed in the bottom, so the hooked weights can be set on a flat surface without tipping over. The opening of the hook for each weight is 1/2 inch.
Stainless Steel hook weights are also available for applications requiring more accuracy and higher capacities
The Brass Hook Weight Set meets Ohaus Internal Tolerance adjustment tolerances and is ideal for applications requiring a minimal degree of accuracy for comparison purposes.
Ohaus OIML Weights
Ohaus OIML Precision Weights are manufactured to the tolerances as set forth by the Organisation Internationale de Metrologie Legale International Recommendation (OIML R 111). Ohaus OIML weights are available in classes E2, F1, M1 and M2.
Weights adjusted to OIML Class E2/M3/M1/F1 can be used as a reference standard in calibrating other weights and is appropriate for calibrating high precision analytical balances with a readability as low as 0.1 mg to 0.01 mg.
These Stainless Steel OIML Weights meets OIML adjustment tolerances and is ideal for applications requiring a high degree of accuracy as when calibrating other weights or high precision balances.
Weights adjusted to OIML Class M3 are economical weights used for general laboratory, industrial, commercial, technical and educational applications. These types of weights can be made of cast iron, or brass.
Single Weights - OIML E2 - Stainless Steel
Ohaus Stainless Steel OIML Weights meets OIML E2 adjustment tolerances and is ideal for applications requiring a high degree of accuracy as when calibrating other weights or high precision balances and are available in weights:
5 g - Single Weight
10 g - Single Weight
20 g - Single Weight
50 g - Single Weight
100 g - Single Weight
200 g - Single Weight
Single Weights - OIML F1 - Stainless Steel
Weights adjusted to OIML Class F1 can be used to calibrate high-precision top loading balances with a readability as low as 0.01 g to 0.001 g.
10 g - Single Weight
1 g - Single Weight
2 g - Single Weight
5 g - Single Weight
20 g - Single Weight
50 g - Single Weight
100 g - Single Weight
200 g - Single Weight
50 g - Single Weight
1 kg - Single Weight
2 kg - Single Weight
5 kg - Single Weight
Single Weights - OIML M1 - Stainless Steel
Weights adjusted to OIML Class M1 are economical weights used for general laboratory, industrial, commercial, technical and educational applications. These types of weights can be made of cast iron, brass or stainless steel.
10 g - Single Weight
1 g - Single Weight
2 g - Single Weight
5 g - Single Weight
20 g - Single Weight
50 g - Single Weight
100 g - Single Weight
200 g - Single Weight
50 g - Single Weight
1 kg - Single Weight
2 kg - Single Weight
5 kg - Single Weight
10 kg - Single Weight
Single Weights - OIML M3 - Brass
Weights adjusted to OIML Class M3 are economical weights used for general laboratory, industrial, commercial, technical and educational applications. These types of weights can be made of cast iron, or brass.
10 g - Single Weight
1 g - Single Weight
2 g - Single Weight
5 g - Single Weight
20 g - Single Weight
50 g - Single Weight
100 g - Single Weight
200 g - Single Weight
50 g - Single Weight
1 kg - Single Weight
2 kg - Single Weight
5 kg - Single Weight
10 kg - Single Weight
Ohaus® Precision Metric Weights
Since 1907, Ohaus has provided an extensive selection of precision, and general purpose weights and weight sets. Today Ohaus is a 9001 registered company and one of the world's leading suppliers of weighing equipment. Offering precision weights and weight sets that meet or exceed the highest tolerance standards of the National Institute of Standards & Technology (NIST), the American Society for Testing & Materials (ASTM), the International Organization of Legal Metrology (OIML).
Weights adjusted to ANSI/ASTM Class 1 – can be used as a reference standard in calibrating other weights and can also be used to calibrate high precision analytical balances with a readability as low as 0.1 mg to 0.01 mg.
Ohaus offers a selection of general purpose weights for general use where adjusting tolerances are not required. These weights are constructed of Brass and/or Aluminum and serve well for general weighing needs.
Single Weights - ASTM Class 1 - Stainless Steel
Weights adjusted to ANSI/ASTM Class 1 – can be used as a reference standard in calibrating other weights and can also be used to calibrate high precision analytical balances with a readability as low as 0.1 mg to 0.01 mg.
Stainless Steel Precision Weight meet ASTM Class 1 adjustment tolerances and is ideal for applications requiring a very high degree of accuracy.
100 g - Single Weight
1 kg - Single Weight
20 g - Single Weight
200 g - Single Weight
2 kg - Single Weight
40 g - Single Weight
400 g - Single Weight
4 kg - Single Weight
50 g - Single Weight
500 g - Single Weight
Single Weights - ASTM Class 2 - Stainless Steel
Weights adjusted to ANSI/ASTM Class 2 Tolerance can be used to calibrate high-precision top loading balances with a readability as low as 0.01 g to 0.001 g.
Ohaus Stainless Steel Precision Weight meets ASTM Class 2 adjustment tolerances and is ideal for applications requiring a high degree of accuracy.
100g - Single Weight
Single Weights - ASTM Class 4 - Stainless Steel/Aluminium
Weights adjusted to ANSI/ASTM Class 4 Tolerance can be used to calibrate of semi-analytical balances and for student use.
Ohaus Stainless Steel/Aluminium Precision Weights meet ASTM Class 4 adjustment tolerances and is ideal for applications requiring a degree of accuracy above general purpose weights.
1 mg - Single Weight
10 mg - Single Weight
100mg - Single Weight
1 g - Single Weight
10 g - Single Weight
100 g - Single Weight
2 mg - Single Weight
20 mg - Single Weight
200mg - Single Weight
2 g - Single Weight
20 g - Single Weight
200 g - Single Weight
3 g - Single Weight
30 g - Single Weight
5 mg - Single Weight
50 mg - Single Weight
500 mg - Single Weight
5 g - Single Weight
50 g - Single Weight
Single Weights - ASTM Class 6 - Brass/Aluminum/Stainless Steel
Weights used by students are often calibrated to the ANSI/ASTM Class 6 Tolerance. This class also meets the specifications of OIML R 111 Class M2.
1 mg - Single Weight
10 mg - Single Weight
100mg - Single Weight
1 g - Single Weight
10 g - Single Weight
100 g - Single Weight
1 kg - Single Weight
2 mg - Single Weight
20 mg - Single Weight
200mg - Single Weight
2 g - Single Weight
20 g - Single Weight
200 g - Single Weight
2 kg - Single Weight
5 mg - Single Weight
50 mg - Single Weight
500 mg - Single Weight
5 g - Single Weight
50 g - Single Weight
500 g - Single Weight
Weight Sets - ASTM Class 4 - Stainless Steel/Aluminum
Weights adjusted to ANSI/ASTM Class 4 Tolerance can be used to calibrate of semi-analytical balances and for student use.
500 mg x 1 mg - Weight Set
50 mg x 1 mg - Weight Set
100 g x 1 mg - Weight Set
Weight Sets - ASTM Class 6 - Brass
Weights used by students are often calibrated to the ANSI/ASTM Class 6 Tolerance. This class also meets the specifications of OIML R 111 Class M2.
500 g x 1 g
(12) Piece Weight Set
1000 g x 1 g
(13) Piece Weight Set
Ohaus offers a selection of general purpose weights for general use where adjusting tolerances are not required. These weights are constructed of Brass and/or Aluminum and serve well for general weighing needs.
50 g x 1 g
(8) Piece Weight Set
Ohaus® Slotted Weights
Slotted Weights 10 g to 500 g (0.1 N to 5 N) are made of brass, and weights 1 g to 5 g are made of aluminum. All Slotted Weights have an approximate diameter of 1 5/8 inches and have a slot opening width of 1/4 inch. A hanger is also available from which you can stack and hang your slotted weights. The overall length of the hanger is approximately 7 7/8 inches with a useable length of 7 inches. The hanger is designed to accept the slotted weights.
What tolerances do you need?
Ohaus® OIML Weights
Ohaus OIML Precision Weights are manufactured to the tolerances as set forth by the Organisation Internationale de Metrologie Legale International Recommendation (OIML R 111),. and weights are available in classes E2, F1, M1 and M2.
Weights adjusted to OIML Class E2 can be used as a reference standard in calibrating other weights and is appropriate for calibrating high precision analytical balances with a readability as low as 0.1 mg to 0.01 mg.
Weights adjusted to OIML Class M3 are economical weights used for general laboratory, industrial, commercial, technical and educational applications. These types of weights can be made of cast iron, or brass.
Ohaus® General Purpose Weights
Ohaus Brass Weights and Weight Sets are economical, quality weights for educational use. Individual weights are available from 2000 g to 1 mg. Weight Sets are designed to achieve any total mass by combining smaller masses.
Standard Design Weights - Weights 1 g and above are carefully manufactured of lacquered brass and are cylindrical in shape for easy gripping. Weights 1 g to 100 g are of one-piece construction and are adjusted during manufacture by removing material from the bottom of the weight. Weights 200 g through 2 kg have an adjusting cavity on the top that is sealed with a plug. Brass weights 1 g and above are perfectly flat on top to stack easily on center. Weights 500 mg and lower are made of sheet metal and are one-piece construction with one side turned up to make them easy to handle with forceps. 500 mg and 200 mg weights are made of stainless steel while weights 100 mg and below are made of aluminum.
Ohaus Brass Weight Sets are economical, quality weights for educational use. Individual weights are available from 2000 g to 1 mg. Weight Sets are designed to achieve any total mass by combining smaller masses.
Standard Design Weights - Weights 1 g and above are carefully manufactured of lacquered brass and are cylindrical in shape for easy gripping. Weights 1 g to 100 g are of one-piece construction and are adjusted during manufacture by removing material from the bottom of the weight. Weights 200 g through 2 kg have an adjusting cavity on the top that is sealed with a plug. Brass weights 1 g and above are perfectly flat on top to stack easily on center. Weights 500 mg and lower are made of sheet metal and are one-piece construction with one side turned up to make them easy to handle with forceps. 500 mg and 200 mg weights are made of stainless steel while weights 100 mg and below are made of aluminum.
Ohaus Hook Weights are used in a variety of applications such as pressure, torque, and tensile strength testing. Hook Weights are available with hook top, hook top and bottom or hook top and bottom with a recessed bottom
Gauges North West Ltd
Unit 1 Old Hall Farm Business Park Crowland Street Southport Merseyside United Kingdom PR9 7RJ
tel;00 44 (0) 1704 536010 fax: 00 44 (0) 1704 548028 email: enquiries@gnw.co.uk
Copyright, Gauges North West Ltd. All rights reserved.
