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Do not make orders from our website, if orders are needed, please call us at 918-251-0353 or visit us at robinsonmfgcoinc.com.

Robinson Manufacturing Co., Inc. is pleased to announce our acquisition of the Refinery Supply Co. beginning July 1st, 2026.

Refinery Supply Co. has been a premier manufacturer of dead weight gauges and testers as well as many other testing instruments for the oil and gas industries for over 100 years.

Robinson Manufacturing Co., Inc. has been setting the standard for oil centrifuges and petroleum products since 1954. Family owned and operated, we take pride in our quality and customer service. Our products are hand-made in the USA with industrial grade materials and components following ASTM and API testing standards.

You can contact customer service at 918-251-0353 or via e-mail at joey@robinsonmfgcoinc.com or rodney@robinsonmfgcoinc.com. While your point of contact will change the manufacturing processes will remain the same.

We value your business and look forward to continuing our business relationship.

If you have any questions, please reach out to me at william@robinsonmfgcoinc.com.

Regards,
Rico A. Tejeda
President

403A092 Specific Gravity Hydrometer, 1.000-1.225, 6" (16770-001)
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  • /media/19510/19510__2.jpg403A092 Specific Gravity Hydrometer, 1.000-1.225, 6" (16770-001)
Item# 403A092

403A092 Specific Gravity Hydrometer, 1.000-1.225, 6" (16770-001)

Price

$0.00 / each

Product Description

*** CALL ROBINSON MFG FOR PRICING 918-251-0353 ***

* Specific Gravity Range: 1.000 to 1.225
* Divisions: 0.005
* Length: 6"
* For Liquids heavier than water

Details

Precision grade design meets API oil testing specifications and is calibrated to API scale Modulus 141.5 at 60°F. Hydrometers are constructed with a solid alloy ballast and are designed to permit quick penetration to the setting point, creating no air bubbles.