ramé-hart currently offers a prebuilt triaxial needle using gauges 24 (inner), 18 (mid), and 14 (outer). This item is kept in stock and is available for immediate delivery. For a copy of the drawing, see: 

To order a prebuilt triaxial needle, go to: 

ramé-hart will build a custom triaxial needle to your exact specifications. Most custom needles can be made using our custom triaxial needle worksheet. Fabrication time is one week. Here are the three steps for ordering your own custom triaxial spinneret:

1. Download our needle chart here and determine the inner, middle, and outer gauges. Note that currently 28g is the smallest inner needle we make. Inside and outside dimensions are listed on the chart. Be sure that the outside diameter of the inner needle is less than the inside diameter of the middle needle and that the outside diameter of the middle needle is smaller than the inside diameter of the outer needle. 

2. Download the triaxial worksheet here and determine the other dimensions and specifications as required for your application. 

3. Once you have your configuration designed per the worksheet, proceed to this page to enter your parameters and place your order:

Regarding payment options, the easiest way to pay for your custom spinneret is with a credit card. However, to accommodate our educational and international customers, we can also accept payment via wire transfer (choose Bank Wire in Advance for payment) during checkout, or purchase orders from rated US firms or universities (choose Purchase Order during checkout AND forward a copy of the PO to us). We can also prepare a proforma invoice. Simply choose "Proforma Invoice" during checkout. A $25 fee will apply.




©2011-2020 ramé-hart instrument co. 
For Goniometers and Tensiometers, please visit

To order coaxial and triaxial spinneret and related products, please visit

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