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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

401A099 Plumb bob Solid Brass 6" Grad Inches/Eighths (35309-003)
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  • /media/17870/17870__2.jpg401A099 Plumb bob Solid Brass 6" Grad Inches/Eighths (35309-003)
Item# 401A099

401A099 Plumb bob Solid Brass 6" Grad Inches/Eighths (35309-003)

Price

$0.00 / each

Product Description

*** CALL ROBINSON MFG FOR PRICING 918-251-0353 ***
* Material: Brass, 1" solid round
* Length: 6"
* Graduated: Inches & 1/8"
* Point: Short-tapered
* Weight: 21 oz

Details

For use with innage oil gauging tapes. All plumb bobs are machined and manufactured in-house from solid brass or stainless steel and feature a serration on one side for use with water/gas finding paste. The eyelet at the top of each bob is precisely machined for accurate measurements. Marked plumb bobs have clearly defined black graduations for reliable and effortless readings.