可选公制和英制标准，本品可与旋转台、平移平台、光学夹具和其它定位装置配合使用，将实验板转换90°。本撑架可与¼英寸螺钉或M6的螺钉连接，取决于您选的型号。普通K款的角撑架只有开口槽（无螺纹孔），即使公制还是英制都没有。小款的型号在两面有3个2英寸长的开口槽；大尺寸款的在底面有5个2英寸长的开口槽，大端面有10个1-½英寸长的开口槽（5排，中心距为1英寸），具体见附图。.
| Type | A | B | C | D | E | Mounting Hole F | Mounting Hole G | Stock No. |
| English, Figure A | 1" | ½" | 3" | 2" | - | ¼-20 | ¼ | #55-379 |
| Metric, Figure A | 25mm | 12.5mm | 75mm | 51mm | M6 x 1.0 | M6 | #55-381 | |
| English, Figure B | 1" | ½" | 2" | ½" | ½" | ¼-20 | ¼ | #55-378 |
| Metric, Figure B | 25mm | 12.5mm | 57mm | 13.5mm | 6mm | M6 x 1.0 | M6 | #55-380 |
| Common, Figure C | 1" | ½" | 3" | 2" | - | N/A | #58-180 | |
| Common, Figure D | 2" | ½" | ½" | #58-181 | ||||
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