Most precise, durable and accurate instrument, resolution to 30 seconds of arc with a large degree plate of diameter 200 mm. and longer verniers gives better accuracy and resolution. Fixed degree plate, telescope and prism/grating table rotate independently. Bigger and heavier model so as to provides more stability for delicate optical measurements. Mass 7 kg.
Category: Physics & Electronic Laboratory Apparatus
Hardwood, with single quick lock clamp.
Type ……………Aluminium Brass Copper Iron Mild Steel Lead Stainless Steel.
Diameter mm. ………………. 12 19 25
Brass diameter 13 mm.
Cast iron with levelling screws, with vertical and horizontal holes to accept 13 mm. diameter rods, each hole with a clamping screw. Overall length 240 mm. mass approx. 2.5 Kg.