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General Tools 520 Precision Adjustable Trammel
Product Description :
The General Tools and Instruments 520 Adjustable Trammels draw large circles and measure sizable distances with the accuracy of a divider
Fine adjusting screw sets points accurately points are removable and may be replaced with the pencil holder
Die-cast bodies with hardened and grounded steel
3-Inch 76mm needle-point legs clamp opening for beam is 38-Inch x 34-Inch10 x 19mm
Trammels conform to government specifications GGG-T-661b
