替代品

Spare balls for the free fall apparatus (item no: 1000738) and launcher S (item no: 1000740). 更多

' data-item-price="66.0000" data-href="https://www.3bscientific.com/cn/dynamometer-with-round-dial-5-n-component-mechanics-kit-for-whiteboard-1024238-u8402505-3b-scientific-u8402505,p_171_33559.html" > Application Area: This product is part of the 'Mechanics Kit for Whiteboard' (Item No.: 1000735). Product Description: Spring dynamometer for experiment demonstrations. Grooved pulley on ball-bearings and cord with hook. Large, easily ... ' data-item-price="66.0000" href="https://www.3bscientific.com/cn/dynamometer-with-round-dial-5-n-component-mechanics-kit-for-whiteboard-1024238-u8402505-3b-scientific-u8402505,p_171_33559.html">更多

This product is a component of the 'Mechanics Kit for Whiteboard' (item no.: 1000735). Aluminium block with a teflon-coated surface and 2 hooks. Dimensions: 55 mm × 50 mm × 25 mm 更多

Aluminium ring with a blade for determining the surface tension of liquids. Includes a hook and three threads for suspension from a dynamometer. The tear-off force in liquids is easy to determine, which is why students can conduct the experiment ... 更多

Lenses made of high-quality optical glass. Breakage and impact-resistant, set in a slide with magnetic base. Dimensions: 70x70 mm² Lens diameter: 36 mm f = +300 mm 更多

Lenses made of high-quality optical glass. Breakage and impact-resistant, set in a slide with magnetic base. Dimensions: 70x70 mm² Lens diameter: 36 mm f = +100 mm 更多

Lenses made of high-quality optical glass. Breakage and impact-resistant, set in a slide with magnetic base. Dimensions: 70x70 mm² Lens diameter: 36 mm f = +50 mm 更多

Lenses made of high-quality optical glass. Breakage and impact-resistant, set in a slide with magnetic base. Dimensions: 70x70 mm² Lens diameter: 36 mm f = -100 mm 更多

Object holder with magnetic base to accommodate optical apertures in slides (50x50 mm2), e.g. single slit N (U8470870) or triple/quintuple slit N (U8478110). 更多

Metal rail with millimetre scale and guide slots for accommodating optical components on a magnetic base. Dimensions: 400x75x10 mm³ Weight: 230 g approx. 更多

Single slit slide for mounting in N-model object holder or in the filter slot of the N-model parallel light optical lamp to use in optical experiments requiring a tight single beam. Dimensions: 50x50 mm² 更多

Optical bench made of black anodised aluminium profile with printed millimetre scale. Cross-section: 70x30 mm² approx. Length: 500 mm Weight: 0,6 kg 更多

Optical bench made of black anodised aluminium profile with printed millimetre scale. Cross-section: 70x30 mm² approx. Length: 1000 mm Weight: 1,2 kg 更多

Optical rider for K-model optical benches (U8475337 and U8475336). With two clamps for diaphragms from the Kröncke optical system or for plates up to 2 mm thick. Dimensions: approx. 40x50x35 mm³ Weight: approx. 70 g 更多

Halogen lamp in cylindrical housing attached to diaphragm screen (100x100 mm²) for mounting on K-model optical riders (U8475350). The filament can be aligned horizontally or vertically. Halogen lamp: 12 V, 20 W Terminals: 4 mm safety sockets ... 更多

Simple transformer for student exercises. Short circuit proof, with connection leads and two cascadable 4 mm safety plugs. Safety transformer conforming to EN 61558-2-6 Safe isolation between power supply and output circuits Specifications ... 更多

适用于学生练习用的简易变压器，具有短路保护功能，包含连接导线 和两个可堆叠的4mm安全插头。 • 安全特低电压（SELV）和功能特低电压（FeLV） • 安全变压器符合EN 61558-2-6 • 电源和输出电路之间的安全隔离 输出： 12 V AC，最大2 A 规格： 约 110 x 95 x 65 mm3 重量： 约 0.64 kg 更多

Tough clamp for diaphragms, filters, diffraction objects and other objects in a slide frame. On diaphragm screen 100x100 mm². Clamping range: 0.2 – 4 mm Dimensions: 100x100 mm² Round opening: 38 mm dia. 更多

Lenses made of high-grade optical glass. Shock-proof and crack-proof installation in optical diaphragm (100x100 mm²). With focal length specification. Dimensions: 100x100 mm² Lens diameter: 32 mm 更多

Lenses made of high-grade optical glass. Shock-proof and crack-proof installation in optical diaphragm (100x100 mm²). With focal length specification. Dimensions: 100x100 mm² Lens diameter: 32 mm 更多

Lenses made of high-grade optical glass. Shock-proof and crack-proof installation in optical diaphragm (100x100 mm²). With focal length specification. Dimensions: 100x100 mm² Lens diameter: 32 mm 更多

Lenses made of high-grade optical glass. Shock-proof and crack-proof installation in optical diaphragm (100x100 mm²). With focal length specification. Dimensions: 100x100 mm² Lens diameter: 32 mm 更多

Lenses made of high-grade optical glass. Shock-proof and crack-proof installation in optical diaphragm (100x100 mm²). With focal length specification. Dimensions: 100x100 mm² Lens diameter: 32 mm 更多

Lenses made of high-grade optical glass. Shock-proof and crack-proof installation in optical diaphragm (100x100 mm²). With focal length specification. Dimensions: 100x100 mm² Lens diameter: 32 mm 更多

Lenses made of high-grade optical glass. Shock-proof and crack-proof installation in optical diaphragm (100x100 mm²). With focal length specification. Dimensions: 100x100 mm² Lens diameter: 32 mm 更多